The Vampire Diaries

Elena arrives home to a nightmare. Damon is the first to realize that Katherine has returned.

When a confused and desperate Caroline leaves the hospital and joins her friends at the Mystic Falls Carnival, Damon wants to take immediate action.

Elena, Damon and Alaric go to Duke University to search through Isobel's research, hoping to uncover any clues surrounding the Lockwood family.

Stefan is shocked when Katherine reveals new secrets about what really happened in 1864. Damon tries a new tactic to resolve his issues with Mason.

Tyler learns more about the Lockwood family curse from Mason, and Sheriff Forbes receives startling information.

Katherine chooses a new victim. Bonnie discovers new information about Mason and shares it with Stefan.

Stefan and Damon decide on a new plan to deal with Katherine at the masquerade ball. Things take an ugly turn when Matt and Tyler start doing shots.

Stefan and Damon come to Elena's assistance and, in the process, learn surprising new information.

Elena puts herself in a dangerous position searching for the truth about Katherine's past.

Jeremy's reckless attempt to help Bonnie lands him in a life-threatening position and forces Stefan to put himself in danger.

As the full moon nears, Caroline helps Tyler prepare for transformation. Damon and Alaric are suspicious when a stranger shows up looking for Mason.

While Damon tries to get the truth out of Jules, he asks Elena to keep an eye on Rose, a situation that turns unexpectedly dangerous.

Johnathan Gilbert's return to Mystic Falls is an unhappy surprise to Elena, Jenna and Damon. Stefan does his best to reach out to a confused Tyler.

Stefan and Elena attempt a romantic weekend getaway, not realizing that they've been followed. Damon attends a tea at the Historical Society.

Stefan tells Elena about his darkest days. Trying to catch Elijah off guard, Damon arranges a dinner party for him with Jenna, Alaric and Andie.

Stefan and Bonnie try to convince Jonas and Luka that they should all be working together, but Jonas's lack of trust leads to a violent confrontation.

Elena and Alaric lash out at John when Isobel's unexpected arrival leaves Jenna devastated. Stefan and Damon realize they have a new secret weapon.

Elena receives disturbing messages from Klaus. Expecting him to show up at the 1960s Decade Dance, Damon and Alaric attend as chaperones.

Klaus is revealed and Elena learns shocking news about his motives. Plus, flashbacks to 1491 reveal Katherine's introduction to Elijah and Klaus.

Damon is willing to go to great lengths to prevent Elena from being a victim of Klaus's plan to break the curse, putting him at odds with Stefan.

As the full moon arrives, Elena prepares for whatever Klaus has planned and Tyler faces his second transformation.

More than one life hangs in the balance as the consequences of the sacrifice ritual play out to a horrifying conclusion.

It's Elena's 18th birthday, and as she searches for Stefan, Damon tries to keep her from doing anything that might draw Klaus's attention.

Damon and Alaric reluctantly go along with Elena's new strategy to find Stefan, leading Damon into a dangerous fight with an unexpected enemy.

Stefan reunites with a vampire from decades earlier. In a flashback to the 1920s, he comes face-to-face with a shocking chapter from his wild past.

A frustrating new enemy pushes Damon over the edge, and his outburst has lasting consequences. Bonnie's strange encounter affects everyone.

A traditional Senior Prank Night before the school year begins takes a deadly turn.

As senior year begins, Elena, Caroline, Bonnie and Matt are reeling from recent events, while Stefan carries out his latest assignment from Klaus.

Preparing to celebrate Illumination Night, Mystic Falls is invaded by spirits. After an encounter with an angry spirit, Damon asks Bonnie for help.

Elena and Rebekah engage in a power struggle, until Rebekah reveals some of her family's ancient secrets and the violent past she shares with Klaus.

On the night of the homecoming dance, Rebekah tells Elena why the evening is so important to her, leaving Elena with conflicting emotions.

Klaus uses violence to convince Damon and Elena that no one will be safe until he finds Stefan and gets his family back.

Elena, Bonnie and Matt surprise Caroline with a small party for her 18th birthday. Tyler refuses to go along with Klaus's latest demand.

Bonnie's recurring dreams about Klaus's coffins lead her to a reunion with her mother, Abby, whom Bonnie hasn't seen in 15 years.

Sheriff Forbes delivers disturbing news to Alaric and Elena about a recent murder weapon. Caroline is heartbroken when she's unable to stop a tragedy.

Elena is invited to a formal ball at Klaus's mansion and discovers a horrifying and deadly plan. Who can she trust with her new information?

When Elijah gives Damon and Stefan a dangerous ultimatum that puts Elena in danger, they turn to Alaric and Meredith for help.

Present-day murders in Mystic Falls remind Damon of a similar crime spree a century earlier. Flashing back to 1912, he recalls a beautiful vampire.

Damon is surprised to learn why Sage has returned, and pleased when she devises an unusual method to help him figure out what Rebekah is up to.

Stefan's emotional turmoil leads him to a dangerous confrontation with Klaus and, later, to a heartbreaking moment with Elena.

Caroline is thrilled when Tyler returns to town, but Tyler soon suspects that something has been going on between Caroline and Klaus.

The 1920s Decade Dance takes a deadly turn when Damon and Stefan realize they need Matt, Jeremy and Bonnie's help to undo a devastating spell.

Klaus attempts to leave town with Elena but finds resistance from a surprising new enemy. Damon and Stefan have a candid talk about the future.

To protect his sister, Jeremy makes a decision that will change everything. Bonnie makes a secret deal with heartbreaking consequences.

In the Season 4 premiere, Elena awakens on the morning after the accident to find the thing that she dreaded most has come true.

Elena tries to cope with the extreme highs and lows that are part of becoming a vampire, as Stefan and Damon argue about what is best for her.

Connor continues his search to uncover the secrets of Mystic Falls. Damon and Klaus question Connor, but the confrontation takes a lethal turn.

Damon, Elena and Bonnie visit Whitmore College, where Prof. Shane is taking over the occult studies classes formerly taught by Bonnie's grandmother.

Stefan and Klaus form an uneasy alliance to try and contain the danger that Connor has unleashed. Connor takes Jeremy, Matt and April hostage.

Terrifying hallucinations leave Elena shaken and confused. After giving Stefan disturbing news about Elena, Klaus takes matters into his own hands.

Caroline does her best to be there for Stefan and Elena during a tough time. Damon tries to convince Stefan to help him uncover Prof. Shane's motives.

Investigating a suspicion about Elena, Damon and Stefan visit New Orleans to see if they can find anyone who remembers their last visit in 1942.

As a winter-themed party fills the streets of Mystic Falls, Stefan and Caroline are at odds with Tyler over his plans for Klaus and his hybrids.

Appearing unexpectedly at Mystic Falls High, Rebekah tries to force Stefan, Elena and Caroline to answer her questions about the search for a cure.

Jeremy is furious when Klaus tries to control him by putting Matt's life in danger. Damon coaches Jeremy as he prepares to take on Klaus's new vamps.

After confronting her father, Mayor Hopkins, over his unconventional approach to ending the violence in Mystic Falls, Bonnie has a run-in with Kol.

Shane leads an expedition to a desolate island off the coast of Nova Scotia, where he believes the secret of the cure lies hidden.

On the island, Damon has an ugly run-in with a hunter. Stefan confesses his true feelings about the possibility of becoming human again to Elena.

When Stefan returns to Mystic Falls with Elena and Jeremy, Caroline is worried about Elena's state of mind. Stefan reaches out to Dr. Fell for help.

Elena's new outlook has everyone concerned, leading Stefan and Damon to agree that going back to a school routine is the best thing for her.

Realizing that Elena needs some time away from Mystic Falls, Damon takes her to New York City, where he lived and partied hard in the 1970s.

Elena and Rebekah search for Katherine and find themselves in a Pennsylvania town, where Elena has a surprising encounter with an old acquaintance.

Elijah proposes a life-changing challenge for Rebekah. Caroline finds that her plans for the perfect prom night are disrupted by Elena.

Acting on a mysterious tip that a plot is brewing against him in New Orleans, Klaus makes a trip to the town he and his family helped build.

Damon and Stefan try to provoke Elena into turning her humanity back on, and Caroline is frustrated when her attempt to intervene backfires.

As graduation approaches, Caroline tries to distract Elena by focusing on simple tasks, but Elena won't be swayed from her new obsession.

In the season finale, it's Graduation Day, and the town is overrun with ghosts intent on settling scores and fulfilling their supernatural destinies.

Elena is thrilled to move into the dorm at nearby Whitmore College with Caroline as her roommate, thinking that Bonnie will soon join them.

Without telling Elena that Stefan is missing, Damon gets help finding his brother. Elena and Caroline investigate the cover-up of a campus murder.

When Elena and Katherine have the same dream that Stefan is in danger and desperately needs their help, they convince Damon to help them find Stefan.

While Mystic Falls observes its traditional Remembrance Day to honor the dead, Damon and Elena try to help Stefan through a confusing time.

On campus, Elena is touched by a sad and secretive student. Elena and Damon attend a historical ball dressed as Anne Boleyn and Henry VIII.

Silas announces his new goal to Damon and Elena, but they are skeptical when he promises to accomplish one important task in return for their help.

While Elena and Damon try to explain Amara's situation to Stefan, Dr. Wes Maxfield gives Katherine some deeply disturbing news.

At Whitmore College, Elena and Caroline decide to throw a big party, but their plans are interrupted when Jesse suddenly needs Caroline's help.

Stefan continues to offer Katherine his support while trying to mask his own pain, until Caroline shows up with an unusual form of therapy.

Damon realizes Elena is in danger and enlists Stefan's help to find her. Damon shocks Stefan by revealing his firsthand knowledge of Aaron's family.

As she faces a new crisis, Katherine remembers the traumatic night in 1490 when she gave birth to the daughter who was immediately taken from her.

When Enzo brings Damon a gruesome present and insists that they bond by committing an act of revenge, Damon makes an effort to do the honorable thing.

Hoping to help everyone move past recent events, Caroline convinces Elena and Bonnie to attend Whitmore's "Bitter Ball" for broken-hearted students.

As Damon's behavior escalates from destructive to deadly, Stefan regrets their last conversation and decides to track down Damon and intervene.

While Nadia remembers her centuries-long search for her mother, Stefan, Caroline and Matt come up with a desperate new plan to save Elena's life.

When Stefan tries to explain recent events to a sick Elena, her first instinct is to call Damon. Damon dreads making a disturbing confession to Elena.

In order to keep Stefan from being harmed by Sloan and the Travelers, Caroline and Enzo go to Atlanta to find a newly discovered doppelgänger.

Stefan and Elena dream of an unsettling alternate version of the life they might have had together. Bonnie has a disturbing encounter with Grams.

Stefan tries to distract Elena from obsessing about her relationship with Damon, while Bonnie tries to be realistic about changes on the Other Side.

Markos's plan to break the witches' curse puts Stefan and Elena in imminent danger, and Damon suggests they hide out in a remote cabin.

Stefan and Elena escape from Markos's control, only to find themselves stranded in a remote location. Damon tries to set a trap for Markos.

Heartbroken by an unexpected tragedy, Damon is focused on holding himself together while pushing Bonnie to stop the disintegration of the Other Side.

As a new season begins, Elena starts her sophomore year, and Caroline obsesses about reversing the spell cast on Mystic Falls.

Alaric helps Elena process her grief, Caroline makes a shocking discovery about Stefan, and an enigmatic new girl arrives in Mystic Falls.

Elena tries to introduce Caroline and Liam, Stefan detects a strange change in Elena, and Jeremy learns a secret about the antimagic spell.

Damon relives a dark day as he and Bonnie labor to find their way back to the other side. Stefan helps Elena reinvent herself and start anew.

A homecoming party at a corn maze disintegrates into turmoil with a terrible accident. Tyler's werewolf curse poses a perilous challenge.

Alaric recruits help when he can't control Jo. Caroline tries to free Enzo from Tripp's clutches, and Damon's return forces Elena to make a choice.

Elena must confront her dark past. Damon makes a discovery that offers hope. Sheriff Forbes finds herself embroiled in a treacherous scheme.

Elena gets good news when she and Caroline host a celebration at the dorm. Luke and Liv uncover worrisome information about the coven's intentions.

Matt reacts when Enzo steps out of line. Damon's plan backfires when he tries to involve Alaric without his consent. Kai poses an increasing threat.

Bonnie waxes nostalgic about happier days. Caroline receives a cheerful surprise at college. When Jo vanishes, Alaric seeks help from Elena and Damon.

Kai kidnaps Elena as he learns to control his new powers. While Jo readies for the merge ceremony with Kai, Caroline and Stefan search for a cure.

Complications build around the merge ceremony and threaten to explode. Caroline is dealt a crushing blow, and Sheriff Forbes fights for her life.

Elena's plan to celebrate Bonnie's birthday takes an ominous turn. Enzo recruits Matt to intervene in Sarah's life, and Jeremy considers an exit plan.

While Jeremy reminisces with a soon-to-be-gone Elena, Stefan helps Caroline arrange her mother's last days. Enzo draws Sarah and Matt into harm's way.

Elena notices a change in Caroline in the wake of her mother's death. Tyler and Matt reconsider their life choices, and Kai turns to Jo for help.

Caroline delivers an ultimatum, and Stefan's deed triggers a perilous chain reaction. Damon gets sobering news, and Sarah stirs Enzo's emotions.

Elena helps Damon try to free his mom from a 1903 prison world. Damon is rattled by Bonnie's gift. Enzo and Alaric's plan to sway Caroline backfires.

Caroline and Stefan lose their humanity and create mayhem on campus, as Damon gambles on a plan to stop them. A karaoke outing hits a discordant note.

Damon must decide if he should reveal vital information to Elena. Bonnie makes an upsetting discovery. Enzo learns the truth about his conversion.

While Alaric and Jo attend their bachelor and bachelorette parties, Elena considers Damon's offer, and Lily spirals downward.

As Elena and Bonnie hustle to help Jo prepare for her wedding, Stefan offers Damon relationship advice. Matt agrees to protect Bonnie from Lily.

An unexpected guest puts Elena's life at risk. When Matt flees, Bonnie tries to take control of her own fate. Damon grapples with a critical decision.

Damon, Alaric and Bonnie return to Mystic Falls just as Stefan and Caroline make a deal with the Heretics. Stefan needs help from someone in Brooklyn.

Damon puts the deal with the Heretics in jeopardy. Heart-stopping measures are taken to save Caroline. Future Caroline can't return to Mystic Falls.

Damon, Bonnie and Alaric take a road trip. Caroline learns something significant about Valerie's past. Secrets are revealed that lead to the future.

Damon is caught in a deadly blackmail scheme orchestrated by Lily. Alaric needs to act quickly at the mortuary. A Halloween party unmasks some guests.

In the future, Bonnie regrets her mistakes. Valerie gets key facts about Stefan from Damon. The Phoenix Stone's secret power is more than just deadly.

Lily's dinner party is meant to be a peace celebration, but some guests are still at war. Damon and Stefan are at odds. Bonnie's future is a shock.

Painful episodes from the 19th century come back to haunt Lily. Damon and Stefan unite to kill an enemy, but a link to Lily could be a deal breaker.

While Julian plans an anniversary celebration for the girls, Damon and Stefan are planning something more sinister, even if Lily isn't fully on board.

A funeral puts a damper on everyone's holiday spirit. A drunken Damon antagonizes Stefan. The power of the Phoenix Stone hits too close to home.

Damon struggles with reality and fantasy. He's forced to relive terrible incidents from both past and present to save Stefan from a painful fate.

Damon experiences aftereffects from the Phoenix Stone, both real and unreal. Julian wants to be pals with Lily's sons. Caroline throws a baby shower.

Damon hitches a ride to the dark side. While Stefan grapples with understanding Damon, Julian suggests a way for Damon to fight off the stress.

A powerful vampire hunter comes to Mystic Falls with a long-standing score to settle. Damon tries to keep Bonnie from getting caught in the crossfire.

Caroline considers her future with Alaric and the twins. An old friend resurfaces. Rayna, Alaric and Stefan hit the road on different missions.

After Rayna goes on a spree, Matt tries to explain there's good vamps as well as bad. Damon makes a bad decision. Stefan has a setback in New Orleans.

The future comes into perspective. Damon makes what could be a fatal mistake. Rayna is on the hunt for Stefan, who has to make a fateful decision.

The results of Rayna's actions touch everyone. Stefan undergoes a major change -- and a change of venue. Alaric looks for a way to reach Stefan.

Damon takes Alaric on the road to Memphis. A new acquaintance gives Bonnie some valuable information. Enzo takes drastic actions that could backfire.

Rayna's power is in play again. With few choices, Enzo and Bonnie consider teaming up with Damon. Stefan and Alaric have a confrontation in Dallas.

As Bonnie's condition deteriorates, Stefan discovers what’s behind Matt's animosity. Caroline comes to a realization after teaming up with Alaric.

After Damon's recklessness spurs the others to band together, Stefan and Caroline are forced to reevaluate their relationship.

Time and options are running out to save Bonnie. Stefan asks Caroline for an unusual favor. Damon's resolve to help is put to the ultimate test.

Stefan discovers that the foul presence from the Armory's vault has a terrible grip on Damon, and Caroline and Alaric scramble to protect the twins.

While Alaric discovers a cryptic clue at the Armory, Stefan, Bonnie and Caroline race to stop Damon and Enzo from targeting an old friend.

While Alaric analyzes the strange relic that could free Enzo and Damon from Sybil's seductive power, Bonnie finds herself ensnared in a lethal game.

Still enchanted, Damon goes in search of a potent talisman, and Alaric and Stefan face a chilling revelation about Sybil's beguiling power.

Stefan faces a stark choice as Damon approaches the brink of being doomed forever. Matt tries to decode a collection of puzzling messages.

Stefan faces a drastic choice when Enzo crumbles in the face of Sybil's psychic onslaught. Caroline races to save the twins from a sinister plan.

Longing for some holiday cheer, Caroline and Stefan plan a cozy Christmas Eve, but surprise party crashers threaten to turn it into a night of misery.

While Stefan and Damon troll for fresh victims for Cade, Sybil takes a group of students hostage to compel Caroline to locate a powerful artifact.

With the Miss Mystic Falls pageant nigh, Stefan's bloodlust sends him on a full-tilt Ripper rampage and Sybil uses visions of Elena to provoke Damon.

After Sybil traps Damon inside his own head, Caroline and Bonnie venture into his mind, and Stefan threatens to lay waste to Mystic Falls.

Cade gives Damon a terrible ultimatum that puts Caroline in jeopardy, and Bonnie and Enzo smuggle the bell out of Mystic Falls to keep it safe.

While Alaric and Matt work to secure the journal that could spell Cade's doom, Damon forms a brazen plan to free Stefan from the devil's clutches.

Damon and Alaric make a deal with an old nemesis that could vanquish Cade and save Elena. Stefan faces a reckoning for his violent past.

Desperate to protect Elena, Damon and Stefan hatch a perilous plan to destroy Cade -- and hell along with him -- once and for all.

When a malicious old foe emerges from hell to threaten Mystic Falls, Caroline and Stefan use their impending wedding to lay a trap for her.

As the fate of Mystic Falls -- and Elena -- hangs in the balance, Damon and Stefan confront their most dangerous foe in one final showdown.