Who is petrova in the vampire diaries

Later, Caroline successfully lures Katherine into a room upstairs that Bonnie had put a spell on, preventing vampires from leaving it. Stuck in the room with Damon and Stefan, Katherine goads the brothers until they attack her. Unfortunately, Lucy had cast a spell over Katherine and Elena so that whatever happened to Katherine would also happen to Elena.

After learning of Bonnie's involvement, however, Lucy turns the tables on Katherine; after her debt to Katherine has been paid by getting her the moonstone, Lucy incapacitates her.

Katherine awakes imprisoned in the tomb , where Damon says she should have been for a long time. As Damon closes the door of the tomb, Katherine screams that Elena is in danger and needs to be protected. After learning from Rose about the existence of the Originals, Elena visits Katherine to ask her about her past.

Katherine complies in exchange for incremental amounts of blood; he time in the tomb without sustenance has weakened her. She explains that, as such, Klaus wanted to sacrifice her as part of a ritual to break a curse. Katherine recounts how she foiled Klaus' plan by tricking Rose into turning her, thus rendering her useless for the sacrifice. When Stefan finally arrives searching for Elena, Katherine warns them that Klaus would not hesitate to kill all of the people Elena loves, just like Klaus had done to her.

Stefan accuses her of tricking Elena, in a desperate attempt to get herself out of the tomb, but Katherine insists that the tomb is the safest place to be, as no vampire would want to enter for fear of being trapped.

Later, alone once more, Katherine peruses the Petrova Family history that Elena had brought, tearing up over drawings of her parents. In an attempt to get the moonstone from Katherine, Bonnie performs a spell that involves burning Stefan's picture of Katherine from and throwing the ashes on her, rendering her unconscious for a minute or two.

Jeremy, in a valiant effort to spare Bonnie from overexerting her powers, ventures into the tomb alone and asks Katherine for the moonstone. Naturally, she refuses, so he shoots a stake into her chest and, while she's distracted, throws the ashes into her face and incapacitates her. While she is unconscious, he enters the tomb, searches for and finds the moonstone, and tries to leave but Katherine revives and attacks him.

When Stefan and Bonnie arrive, Katherine holds Jeremy hostage and demands that Bonnie open the tomb so that she can escape. When Bonnie fails, Katherine bites Jeremy but Stefan reacts by entering the tomb and throwing Jeremy out of it, now imprisoning himself along with Katherine.

Katherine is very pleased with herself for trapping Stefan with her. She enjoys planting dreams in his head while he sleeps, though later she does offer the useful advice of seeking out Isobel for information about Klaus. After Elena strikes a deal with Elijah, the warlock Jonas breaks the spell of the tomb, allowing vampires to leave it.

Elijah allows Stefan to leave, but compels Katherine to stay inside. When Damon visits Katherine in the tomb fishing for confirmation about how to kill an Original, she begs Damon not to kill Elijah, because then she would be stuck in the tomb forever. Later this is revealed to be a lie: rather, Katherine knew that killing the Original that had compelled her would actually release her from the compulsion.

After they've staked Elijah, Damon finds Katherine in his shower, cheekily asking for a robe to borrow. She further surprises Damon by reaffirming her pledge to help him protect Elena. Katherine subsequently takes up residence with the Salvatore brothers, much to the displeasure of Elena. Katherine repeatedly states that she will help them to deal with Klaus, and engages in research with the brothers. She is staked and nearly killed by Luka Martin when he infiltrates the mansion via astral projection in an attempt to release Elijah, but is rescued by Damon, who unwittingly burns Luka to death.

When his father strikes out in a rage against Elena, Katherine tricks him into believing that she is Elena and kills him. Later, she flirts with Damon in bed, despite admitting to him that she knew the dagger would kill the vampire who used it, and, having to make a choice between Damon and Stefan in a deal with John and Isobel, she chose Stefan once again.

Needless to say, Damon does not play along and asks Katherine to find another room to sleep in. Despite insisting to Stefan and Damon that she's on their side when it comes to killing Klaus, Katherine reunites with Isobel, formulating a contingency plan in case things don't go well for the Salvatores. She helps Isobel kidnap Elena, but soon Isobel double-crosses her and the warlock Maddox incapacitates her, later delivering her to Klaus.

He denies her request that he just kill her; he considers death to be a "kindness" after searching for her for over years, and promises to draw out his punishment for at least half as long. Before he gives it to her, he demands to know why she double-crossed them with Isobel. She replies that she didn't think the others could stand a chance against Klaus and she was looking out for herself.

Damon gives her the vervain and tells her she owes him - and he will collect. He tells her Alaric's body is no longer useful. Having taken the vervain, Katherine only pretends to submit to his compulsion. When Maddox returns with Greta and Klaus's casket, they perform a spell to return Klaus to his true body.

They open the casket and Katherine watches in horror as the real Klaus walks out. He asks Katherine where Klaus is keeping the werewolf. Katherine is reluctant to help out but reveals that Klaus has captured Caroline and Tyler. She is shocked to learn that Elena has vampire blood in her system and Damon warns her that this means she would have to compete with Elena for Stefan's love forever. Katherine reveals that Caroline and Tyler are being held in the tomb. Klaus returns to Alaric's apartment and is immediately suspicious of Katherine.

He compels her to tell him what she has been doing but, as she is taking vervain, she is able to lie. Still suspicious, he compels her to remove her daylight bracelet, walk to the window and stand in the sunlight.

Katherine has to do it to keep up the ruse and screams in pain until Klaus relents, satisfied. Later that night, after Klaus returns to the apartment and tells Katherine that Elena is with Greta, Damon appears and tells Klaus that he rescued the werewolf and vampire and killed Maddox, thereby foiling his plan. Klaus has Katherine leave the room, then informs Damon of his backup plans. Katherine revives Damon with a blood bag Klaus had knocked him out off-screen and tells him that Klaus has gone to begin the ritual.

She admits that she had to do something so Klaus wouldn't realize she was on vervain, and reveals that Klaus made her make a call as Elena to lure someone out, explaining that he needed another vampire. Damon asks why Klaus didn't use him as the vampire in the sacrifice. Apparently Klaus had said that Damon was as good as dead. She points out the ugly wound on his arm and asks what it is. He replies, "It's a werewolf bite.

She is hurt that after years he is leaving without saying goodbye and tells him not to depart on bad terms. She insists that she didn't have a choice and had to lure Jenna for Klaus, adding that she chose her life over Jenna's. Damon observes that Katherine will survive all of this without a scratch. Katherine points out that she doesn't let love get in the way and Damon tells her to enjoy an eternity alone. He leaves to offer himself to Klaus, but Katherine insists that Klaus won't accept him as his blood is impure.

In it, she asks if he will miss her while he is off fighting and he says he will, but points out that she will still have Stefan. Katherine asks if it is so wrong for her to want them both. However, Damon hallucinates that Elena has joined them. Elena tells him that Katherine was just toying with him and he could have walked away - he had a choice. Flashback-Katherine bids him to return quickly. Katherine after being bitten by Klaus. However, Katherine does follow through and appears at the eleventh hour, interrupting Elena's would-be final moments with Damon.

She admits that she decided to deliver it because she owed Damon. Elena asks about Stefan, and Katherine informs them that Stefan has surrendered himself to Klaus in exchange for the cure. Before she leaves, and after taunting Elena about working two Salvatores at once, she adds that it's OK to love them both - she did, after all.

Katherine makes her first appearance of the season in The End of the Affair , when she calls Damon and gives him information about Stefan's whereabouts. She declines to tell Damon where she is, but is later seen exiting a phone booth in Chicago. In Disturbing Behavior , she is still in Chicago and catches Stefan's attention outside of a boutique where Rebekah is trying on clothes.

She fishes for information about Rebekah's necklace, which Klaus is looking for and which Stefan gave to Elena.

She wants to know Stefan's plans, but he refuses to share them. Katherine warns him about plotting against Klaus, as well as dealing with Rebekah.

She later saves him from Gloria 's torture by stabbing the witch in the neck, and wants in on his plans if they involve taking down Klaus, but he turns her down again. Towards the end of the episode, Katherine fools Bonnie into thinking she's Elena, and manages to steal Esther 's Talisman. She shows up at the Boarding House with the necklace, proposing to Damon that they team up and get away from Mystic Falls to go on a little "road trip".

In The Reckoning , after they stop the car, Katherine reveals to Damon that she has kidnapped Jeremy. She needs Jeremy because he is able to communicate with ghosts, and he has a connection with Anna , one of the only people who knew anything about Mikael , a vampire who hunts vampires. Anna says Mikael is the only one who can kill Klaus for good, and he was entombed by a witch in the s. Anna reluctantly gives them information about him, warning them that Mikael will kill all of them if awakened.

Katherine ignores her warning, and is able to locate his tomb with Jeremy's help. Katherine spends two days trying, unsuccessfully, to get Mikael to feed, and finally brings him a human and drips fresh blood into his mouth. Mikael opens his eyes, and, horrified, orders her to stop feeding him the blood. As he continues to lay in his coffin, still very weak, she begins to doubt his formidable reputation. She asks him whether he can kill Klaus or not, and Mikael answers affirmatively.

He asks Katherine to remove the chains restraining him; after she does, he reveals that he does not feed on living things, and proceeds to attack and feed on her. In Homecoming , Damon enlists Katherine in a plan to kill Klaus. She pretends to be Elena so that Elena won't be in danger when everything goes down.

However, during the party, Klaus, thinking that she is Elena, reveals that in the event that Klaus is killed, the other Hybrids will kill Damon. Katherine then runs back to the Salvatore house, revives Stefan whom Mikael and Damon had incapacitated to keep him away from the party and tells him what Klaus said. She tries to convince him to care enough to stop Damon from killing Klaus, because regardless of what he decides, she is going back to see the plan through.

Back at the party, Mikael compels one of the hybrids to grab Katherine pretending to be Elena and threatens to kill her if Klaus does not leave the Lockwood house. Klaus, believing that Mikael is bluffing, says to go ahead.

Mikael then stabs Katherine, who falls down apparently mortally wounded, right as Damon jumps Klaus. Much to Mikael's surprise, Katherine stands up, throws wolfsbane grenades at the approaching hybrids and flees the scene. Later, she calls Damon to tell him he had a good plan and confirms Damon's assumption that she's already heading out of town.

She hangs up with Damon and turns to Stefan, who is in the passenger seat. He asks Katherine why she, who has wanted Klaus dead for years, would stop a plan to kill him just to save Damon. Katherine says she did it not just to save Damon, but also Stefan's humanity.

He doesn't believe her, reminding her that she only cares about herself. Katherine tells him he knows that's not true, and that despite everything that had happened, she did love Stefan and Damon. Katherine then says that humanity is a vampire's greatest weakness, and no matter how hard one tries to suppress it, it keeps trying to fight its way back in - and sometimes, she lets it.

Stefan confesses that he doesn't want to let his humanity back in after everything he has done. Katherine says that he must, because she needs him to get angry enough at Klaus to do what she has planned next. She convinces him to steal the coffins that Klaus keeps his family in, before she herself puts as many miles as possible between her and Klaus. She torments Elena, telling her they're both the same and that she deserves to die. She proceeds to tell Elena that now that she's a vampire, Stefan is going to hate her, too.

Later, Elena finds herself walking to the Wickery Bridge with Connor on one side and Katherine on the other, asking her if she's ready to die yet and telling her she can't take back what she's done, that she's a monster who deserves to die. In Down the Rabbit Hole , Katherine makes her dramatic return. Unseen by the characters or viewers, she kills Massak and presumably steals the headstone from him.

Later, she confronts and attacks Elena in the caves, defeating her and switching clothes with her. As Vaughn is about to finish Jeremy off, "Elena" swoops in to save him. She is about to bite Vaughn and kill him when Jeremy reminds her of the Hunter's Curse; instead she just knocks Vaughn out.

Katherine continues to pose as Elena while Jeremy begs her to heal Bonnie with her blood to save her, but "Elena" insists they must raise Silas and get the cure first. Growing impatient, Katherine reveals her identity and grabs Jeremy, slits his wrist, and puts it in Silas' mouth, causing Silas' eyes to open.

To speed things up, Katherine bites Jeremy's neck and holds the wound over Silas' mouth. Silas gains enough strength to raise his hand and hold Jeremy's head in place, so Katherine grabs the now unguarded cure and flees.

While not physically appearing in Bring It On , Katherine did send the vampire Will to kill the werewolf Hayley , who was now no more than a liability, having served her sole purpose of telling Katherine where to find the cure and how to get it.

Later on, Hayley reveals to Klaus that Katherine had successfully managed to avoid him for over five hundred years because she had established a network of people who were willing to do anything for her, including tie up loose ends.

In American Gothic , when Elena and Rebekah track her to a small town where she has compelled everyone to keep her presence there, among other things, a secret. Katherine spots Elena searching the town and ambushes her, but Rebekah quickly intervenes and reestablishes dominance.

Rebekah and Elena bring Katherine to a diner to interrogate her, which she unwillingly endures with her usual snark. When Katherine mentions Jeremy, whose death she had caused, Elena remains indifferent and Katherine realizes that her descendant has abandoned her humanity.

Rebekah attempts to compel Katherine to reveal where the cure is, but Katherine smiles and informs them that she's on vervain. However, she does reveal that she wants the cure in order to barter with Klaus for her freedom. When Elena finds out Katherine is supposed to be meeting someone named " EM ", she exchanges clothing and accessories with Katherine and goes to the meeting in her place.

After Elena leaves, Katherine antagonizes Rebekah until the Salvatores arrive, demanding to know where Elena is. Katherine admits that Elena has unknowingly gone to meet Elijah, with whom she hints at having a sexual relationship.

Katherine takes Rebekah and Damon to a home she says is hers and, after opening a safe, claims that the cure has been stolen. They don't believe her, so Rebekah heads upstairs to search, leaving Damon alone with Katherine. He notices that the fish tank suspiciously has no fish in it, but only a large treasure chest. When he reaches into the tank, his hand gets burned - it is filled with vervain. Damon begins to attempt to scoop out the chest with a net when Katherine shoves his head into the vervain for several seconds, then sends him howling in pain to the floor.

She secures the chest herself and almost escapes out the front door, but Rebekah reappears and blocks her way. Katherine tosses the cure away from herself, distracting Rebekah long enough so that she can escape. While Elijah and Elena discuss the foolishness men who believe the innocent girls they Elijah and the Salvatores fell in love with still exist within who Katherine and Elena are now, Katherine appears suddenly and snaps Elena's neck.

Elijah kneels by Elena's lifeless body and confronts Katherine about her killing Jeremy and feeling nothing for Elena despite their similarly tragic fates. Katherine says she didn't enjoy killing Jeremy, but that doing so was necessary to survive. Elijah wonders aloud if that's what he is to her -- a means to survive.

She protests, insisting that she loves him, but Elijah cannot be persuaded. She makes a last-ditch effort by reminding him that she can't broker a deal with Klaus without his help, but this appears to hurt the situation more than it helps, and Elijah leaves her. Katherine arrives, alone, at the home of the woman Elena and Rebekah had first talked to when they got to town and retrieves her "package" - the real cure and the key to securing her freedom. Later, Katherine confronts Elijah on the street and tells him that he was right: she's told so many lies to survive for so long, she's beginning to believe them herself.

She admits that she doesn't remember who she was when they met, but that she'd like to find out. Katherine explains that she could use the cure to make Klaus mortal and kill him, but this would mean losing Elijah, a consequence she's not willing to accept. Elijah, moved by Katherine's speech, still resists temptation and raises concerns about Katherine's track record for deceiving men.

Katherine responds by taking his hand and placing the cure in it, saying she wants him to trust her like she's now trusting him, and that he must decide what happens next, with both the cure and their relationship. She casually strolls into the Salvatore boarding house and tells Stefan and Damon that Hayley was exactly what they needed to get rid of Klaus for good.

Later, she shows up at Rebekah's house uninvited and eavesdrops on Rebekah's phone call with Elijah. She insists that she and Klaus are the same in that they are driven by their loneliness, and Klaus won't be able to walk away from his new situation with Hayley. After Rebekah refuses to follow Klaus and Elijah to New Orleans, Katherine begs Elijah to stay with her so they can make a life of their own and let Klaus deal with his own business.

Elijah kisses her on the forehead and says, "Goodbye, Katerina". Katherine, reluctant to give up her potential leverage, asks Bonnie how she could benefit from handing it over, but Bonnie just vaguely insists that she would make it worth Katherine's while. When she enters the house, she taunts Rebekah and Matt before heading down to the cell where Elena is locked up. Katherine pulls Elena out of the vault and makes a snarky remark about checking to see if Elena still has a heart before she plunges her hand in Elena's chest.

Katherine interrogates her, asking about what transpired between Elena and Elijah in Willoughby; Katherine clearly believes that whatever Elena said turned Elijah against her. In response, Elena goads Katherine about running from Klaus for so long, calls her a self-obsessed maniac and cruelly wonders aloud why anyone would want to be with "damaged goods" like her. Katherine retaliates by grabbing Elena's neck and admits that she's done terrible things to survive, but instead of turning off her humanity, she dealt with it.

She adds that Elena wouldn't last a week as a vampire without everyone fawning over her before she locks her in the vault again. After a moment, she decides that seeing Elena go on a rampage would be more entertaining and unlocks the vault, leaving it open for Elena to escape. She returns to the main level of the house and pours herself a few successive glasses of bourbon while talking to Damon.

She taunts him by predicting that Elena will rush back to Stefan when she gets her humanity back, calling this the tragedy of Damon: he never gets the girl. At that moment, Stefan shows up and reveals that Elena has escaped. Katherine feigns carelessness before admitting that she would derive more pleasure from seeing Elena continue her downward spiral than if she managed to start recovering from it. Bonnie sets up another meeting with Katherine, who has figured out that Bonnie needs the headstone because it contains Qetsiyah 's blood.

Having the headstone would give Bonnie the power to drop the veil to The Other Side whenever she chooses, instead of having to wait to channel the power of the full moon. Katherine asks again what is in it for her, and Bonnie sweetens the deal by promising that once the veil is dropped, she'll find out from Qetsiyah how she made Silas invulnerable to any weapon, and in turn Bonnie will share the secret with Katherine.

With the prospect of finally having true freedom from Klaus in her sights, Katherine agrees to the deal. In The Walking Dead , Katherine met Bonnie in the woods where we learned that Bonnie wanted to charge all three points of the Expression Triangle where the massacres had taken place and channel the mystical energy from Silas' tombstone.

That would drop the veil inside the points of the Triangle just long enough to get what she needs -- which is to contact Qetsiyah and find out how she put Silas down. Katherine tried to walk away, but Bonnie had linked them so that Katherine was on an invisible leash and whatever happened to one of them happened to the other. Bonnie couldn't have Silas getting inside Katherine's head and finding out Bonnie could do the spell whenever she wanted.

She went with Bonnie to the other two places where the massacres took place and then they went to a cave which is located in the center of the expression triangle. Katherine heard someone coming, so Bonnie gave her more leash so she could go stop them. It was Elena, who managed to stake Katherine in the stomach.

Bonnie felt it, too, and bled. Elena could've finished Katherine off, but Stefan had heard from Bonnie about the link, so he stopped Elena. Katherine bolted. Whilst she is taking a bath in Damon's tub, Silas imitating Stefan shows up suddenly. They flirt and when they are about to kiss Silas grabs her neck, attempting to drown her and she grabs a razor and cuts his face before running downstairs.

Damon stops her, throws her to Jeremy and tells him to take her far away, however not to tell him where he is going. Damon stays in the house with Silas, and Silas reveals the whole truth about Stefan suffering "like he has". Silas asks him to return Katherine for his brother, Damon makes up his mind and immediately calls Jeremy and tells him to return to the house. As soon as Jeremy turns around, Katherine knows what is happening and demands Jeremy to stop the car, however when he tells her to shut up, she tries to escape causing an accident where she and Jeremy are seriously injured by crashing into a post.

She limps from the car, spotting a barely conscious Jeremy who asks for her help, she ignores him and hobbles away, leaving him dying in the middle of the road. She asks them if the rope is really necessary and Jeremy reminds her that she almost got the two of them killed and left him to die. Katherine says she was doing what she always does anything to survive. She also tells them she's been through this a thousand times: she's the leverage, the one thing everyone wants. She says she's now like the moonstone, as Matt settles her in the truck.

Later, they stop at the gas station where Katherine says she needs to get out of the car, but Jeremy tells her no. Katherine then complains that she needs to go to the bathroom and should go like a lady. Jeremy unties her and tells her to hurry, Katherine tells him that she's getting sick and is coughing up green stuff and tells him to get her something for it, Jeremy tells her he can't so she begs Matt to do it.

As Matt gets medicine for her and Jeremy gets gas for the truck, Katherine goes to the bathroom and sees an opportunity to run. When the clerk in the store sees Katherine, he begins to call Silas as Katherine runs off.

Jeremy catches her and tells her to stop running and takes her back to the truck. That night, Jeremy, Matt, and Katherine create a bonfire. She sees a shotgun, but Jeremy tells her not to think about it.

Katherine replies that she doesn't know how to use a gun because she didn't need one and that she was much deadlier. Katherine then complains that, after surviving childbirth, the death of her entire family, and running from Klaus , she's upset about being defeated from a sinus infection.

After Silas stabs Jeremy by stabbing himself first , Katherine returns and shoots Silas. In Original Sin , Katherine decides to accompany Damon and Elena in search of Stefan, after having the same dream as Elena with the possible whereabouts of Stefan.

She says that Stefan is also important to her and she jokes in all the way to Damon and Elena about their relationship. Damon and Elena decide to enter and leave her there. After Katherine enters and meets Nadia , Katherine flees until she meets again with Elena in the forest. They have a conversation and Nadia appears, snaps Elena's neck and takes Katherine. When they are about to escape, Silas arrives.

Nadia tells him that she isn't going to deliver Katherine. Silas enters in her head and tries to force her to commit suicide, when Nadia is about to do it, Silas falls to the ground in pain and they flee. Katherine is rummaging in Nadia's stuff when she enters the room. Nadia is conversing with Katherine when Silas calls her and says she must deliver Katherine. Katherine takes the phone asking what he wants with her and Silas replies: "The cure still exists, and I still want it.

It's just running through your veins right now. Your blood is the cure, Katherine. He tells her he wants Katherine, but Nadia refuses to give her up. Nadia continues to tease him about his inability to use his powers, and Silas tells her he can track them through cell phone tracking.

Nadia quickly hangs up on him and tries to take Katherine away. Katherine asks her why she doesn't just hand her over to Silas so he can just have his "little sip" of her blood. Nadia tells her that Silas needs every last drop of blood in her body, which will kill her. Later on, Nadia and Katherine are eating lunch at a diner and Nadia tells her that she's been tailing her for years and that she wants answers, and if she gets them, she'll let Katherine go.

Katherine agrees and Nadia tells her that in , she heard about the vampire round up in Mystic Falls, when Katherine sold out her other friends. Katherine tells her about the many horrible things she's done and Nadia asks her if she remembers ripping a mother away from her daughter. Katherine doesn't recall this and Nadia tells her that Katherine killed her mother in Paris in , and that she has been spending the last years hunting Katherine down for revenge.

Katherine realizes that Nadia does not plan on letting her go. Nadia tells her it's time to leave and Katherine seizes the opportunity to grab a nearby cane and stab Nadia with it in the chest before running off. Katherine later finds Nadia in an alleyway, trying to get the cane out of her chest without touching her heart and Nadia asks her why she didn't kill her.

Katherine says she knows Nadia's story about her mother was false. Nadia says it was a test and that Katherine failed. She says she wanted to get under Katherine's skin and she succeeded. Katherine asks her what game she is playing and Nadia tells her that Katherine really did kill her mother, but it was not in Paris but in England on April 6, She says how her mother was exiled by her family two years earlier and how Katherine put her mother's neck in a noose and threw her off a chair, snapping her neck, the same way Katherine died when she was human.

Katherine is confused and Nadia reveals that her name is Nadia Petrova, and that Katherine is her mother. She is the child that was born out of wedlock and was taken away from Katherine by her father when she was human. Katherine is shocked to learn this. Later on, Nadia wakes up to find the cane removed from her chest and looks up to see Katherine, and tells her she is a fool for not running because Silas will find her.

Katherine says she isn't worried, she is good at running and that Silas doesn't need her until he figures out how to destroy the Other Side because if he dies as a witch he will be stuck in "supernatural purgatory".

Katherine says she has had a question bugging her for years. She asks Nadia where she was in Nadia says she cannot remember because she was only 8 years old, and Katherine tells her that by then she had escaped Klaus and went back to Bulgaria. She tells Nadia she searched every village, every cottage looking for her and she couldn't find her. She says she went back for her, and that it's nice to meet her. Nadia begins crying and smiles before accepting a cup of tea from Katherine.

When Katherine arrives at the Salvatore mansion, lifeless Silas on a couch nearby, she's ecstatic in knowing that she may have toppled the all mighty Silas and escaped death for good. But Damon has other plans. After Katherine unsuccessfully pleads for him to spare her she doesn't want to die after all , Damon shoves her neck down Silas' throat, draining her of her cure-laced blood. Moments later, Katherine suddenly awakens with her heart still thumping: "Am I in hell?

In Handle with Care , Katherine celebrates the fact that she hasn't died by indulging in food when she notices that her hair is starting to gray. She then dyes her hair and moves into Elena and Caroline 's dorm room and pretend to be her but Caroline realizes that she is Katherine then she takes her neck.

Katherine says that she needs a place to live, Caroline at first says no but Katherine tells her that she can help with the Dr. Maxfield and Caroline accepts. Later, the professor Maxfield in his laboratory, is conducting experiments with vampire blood, Caroline appears and Katherine takes the opportunity to inject a substance into his neck, the professor faints on the floor. Caroline and Katherine planned to drain the vervain in his system to compel him to tell them everything he knows about vampires, Katherine takes over and begins to drain blood from the professor.

He tells them that the secret society planned to invite Elena to belong to the group but for his suspicions that she was a vampire, they desisted. Katherine then takes the decision to impersonate Elena and Caroline stays with the professor. Katherine then suspects that she may be dying and goes to Dr.

Maxfield for help. Later, Caroline is at Whitmore College and she meets Nadia , they are talking and then Katherine comes, Nadia tries to tell Caroline that Katherine is her mother, but Katherine interrupts her and doesn't permit, Caroline leaves and they are left alone. Nadia wants to know the reason for her abandonment again but Katherine says that she never abandoned her, she says that Nadia was snatched out of her arms at birth because her father thought she was a knocked-up and second of all, that it's been years and that she isn't required have to do the whole mother-daughter bonding thing.

Caroline interrupts the conversation between Nadia and Katherine and takes Katherine to the Salvatore Mansion, since Qetsiyah need her to perform the spell to the resurrection of Bonnie. Katherine helps with Qetsiyah's spell but exchange for help with the issue of aging, Qetiyah accepts make a spell to stop it but after she resurrects Bonnie, Katherine agrees. Katherine, Amara and Elena are ready to perform the spell. Qetsiyah cuts their hands and put their blood on Bonnie's grimoire, when they are about to complete the spell, they are interrupted by Silas.

When Katherine is trying to clean her blood after being cut by Qetsiyah on the hand, Caroline offers her blood to cure her but Katherine can't drink vampire's blood. After Katherine finds Qetsiyah alone in the mansion and she says it's time to do the spell, Qetsiyah tells her that she not going to help her and Katherine realizes that Qetsiyah is dying, she screams for help but Qetsiyah dies in her arms.

Later in the college Caroline is preparing her room for Bonnie too come back to life. Then Katherine arrives and understands that she has to go. She looks for her bag but can't find it. Nadia appears with her bag and tells Katherine that she will travel to Prague and she wants Katherine to come with her. Katherine says that it's all a fantasy. She would rather rip her own heart out than do more mother-daughter bonding with Nadia.

Now that she is human, it wouldn't really be that easy. She says that she doesn't want to know her. Nadia is very sad about that and then Katherine says that she's never going to see her again. Katherine leaves the room. She explained him to what Travelers are- they're a faction of witches that heavily believe in the spirit world. What they did to Matt was attach themselves onto his spirit like a parasite. Lucky for Matt, Katherine also happens to know who else can help him out, her daughter.

Katherine needs Stefan's help as part of her plan with Matt. After sweet talking and then moving onto guilt tripping, when the first didn't work, she got him to agree. Klaus needed human doppelganger blood to complete the ritual to undo Esther's spell. Klaus and Elijah created the legend of the Sun and Moon Curse to locate the next doppelganger, but if Klaus knew she would be a Petrova descendant, it didn't make sense for him to murder Katherine's entire family effectively ending the bloodline He also appeared not to know about Katherine's daughter.

Katherine's daughter established the ancestral link between herself and Elena, but Katherine's knowledge of doppelgangers was limited. Katherine was also a descendent of the Travelers, but her father turned his back on the outcast witches and their magic.

This would explain why she wouldn't have known about Amara and the origin of the doppelgangers. Katherine understood doppelganger blood was used to suppress Klaus' werewolf side, but she told Elena during season 2's "Katerina" that a doppelganger was also a loophole: one created to undo the spell. Doppelgangers were a loophole, but they were created for a larger purpose. The latter told Elena during season 1's "Isobel" that Katherine sought her out not long after she turned into a vampire.

Isobel believed it was out of genetic curiosity. Katherine used Isobel to gain access to information about Elena, who she planned to hand over to Klaus as a peace offering for fleeing a half-century earlier. Given Isobel made it her life's work to study the supernatural, her lack of understanding of doppelgangers was surprising, particularly since she was a descendent of Amara's. Isobel viewed Elena as nothing more than a biological curiosity.

Since Elena was a Petrova descendent, that meant her mother Isobel was as well. Unfortunately, the link between Isobel and Katherine was unclear. When Katherine's daughter Nadia Petrova, arrived in Mystic Falls during season 5, she revealed she became a vampire so that she could track down Katherine: a task that required time, skills, and resources Nadia didn't possess as a human.

Nadia never mentioned having children, but since Klaus killed Katherine's entire family, there was nobody else to keep the bloodline going except for Nadia's offspring. The series never addressed the plot hole. As a naturally occurring, mystical being , Elena's blood and that of all doppelgangers contained power that, when compounded with magic, could create spells such as the ones Esther concocted to try and kill her children during season 3, or Qetsiyah's attempt to complete the Anchor swap.

Her blood could also be used to undo the magic, such as the Sun and Moon Curse. Some spells required human doppelganger blood, and others did not, although Elena's blood was more sought after commodity before she became a vampire. Like Tatia and Katherine before her, Elena was also involved in a love triangle between two brothers, and she suffered personal tragedy resulting from her connection with the Mikaelsons.

The season 4 finale of The Vampire Diaries , fans learned Elena and Katherine weren't the only doppelgangers. Stefan came face to face with Silas , who revealed that Stefan was Silas' shadow self. Just as Amara was the progenitor of the Petrova line of doppelgangers, Silas had a doppelganger bloodline of his own - the Salvatores. Stefan's relationship with Silas was as antagonistic as Elena's was with Katherine.

Season 5 established a strong connection between male and female doppelgangers: they were fated to find each other and fall in love. To sweeten the potential deal with Klaus, she killed Caroline Forbes, who had Damon's blood in her system and later transitioned into a vampire, and tricked Mason and Tyler Lockwood into triggering their werewolf curses, just so they could each also serve as the vampire and werewolf sacrifices necessary in the ritual.

She even tracked down the moonstone so that she could give Klaus every component necessary to break his curse. However, when her plans ultimately fell through, she fled Mystic Falls again shortly after Klaus broke his hybrid curse on his own, knowing that he was not done punishing her for her betrayal half a millennium ago.

After failing to induce Klaus' forgiveness by securing the cure and handing it over to Elijah in Season Four, Katherine managed to draw Klaus away from Mystic Falls by revealing to him in a letter that a witch in New Orleans named Jane-Anne Deveraux was plotting against him. Once Klaus and Elijah officially returned to New Orleans, Katherine moved back to Mystic Falls, confident that the Mikaelsons would be too preoccupied with their complications there to pay any attention to her.

In Graduation, Katherine initiated a violent fight with Elena, believing that Elena got the life that Katherine deserved. Following these events, she went on the run for the summer, but when she realized that her return to humanity made her vulnerable to all of the various supernatural enemies she had made over the centuries, she returned to Mystic Falls, hoping to sweet-talk Stefan and Damon into giving her their protection.

However, she was forced to flee again when the immortal Silas came looking for her at the Salvatore Boarding House and tried to kill her.

Silas later revealed to Damon that Katherine's blood became the cure after she had ingested it, which is why he wanted Katherine so he could cure himself and die so he could be reunited with his true love in the afterlife. She ran from him for weeks, but eventually, Damon helped Silas lure Katherine to the house and fed him her blood, which turned him back into a witch. Though Katherine should have died after Silas completely drained her of blood, Katherine's survivor instincts won out, and she managed to live through the attack.

Not ready to die, her daughter Nadia reminded her that as the daughter of a Traveler, Katherine had the magical powers necessary to become a Passenger in someone else's body. She ultimately cast the Passenger spell on her deathbed to transfer her spirit into Elena's body, with help from Nadia and a Traveler named Mia. After the gang discovered this, Stefan stabbed her with the Traveler Knife, expelling her from Elena's body, but not before Katherine made amends with a dying Nadia.

Upon learning she was denied entry to the Other Side, and therefore also denied a reunion with her daughter, she was dragged by unseen forces into what is presumed to be a hell of some kind. It was revealed that Katherine was sent to Hell where she manipulated Arcadius since the minute she was sent there.