Season 3, Episode 4

Disturbing Behavior

6.5/ 10October 6, 201142 min

Still in Chicago, Klaus uses Gloria, a witch he knew long ago, to help him track down missing information that will explain why his plan isn’t working. Gloria’s spells reveal intriguing glimpses of the truth, but she soon realizes she needs Stefan’s knowledge to complete the puzzle. When Stefan suddenly finds himself in danger, help comes from a surprising ally. Back in Mystic Falls, a frustrating new enemy pushes Damon over the brink and he lashes out in a way that will have lasting consequences. Caroline struggles with her own emotional issues, even as she tries to help Elena face her feelings. Jeremy makes a brief but disturbing breakthrough with one of his ghostly visitors, leaving him more confused than ever. Finally, Bonnie has a strange encounter that will affect everyone.

Directed by
Wendey Stanzler
Written by
Brian Young

Guest stars

All episodes — Season 3

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  1. S3 E1

    The Birthday

    Sep 15, 2011842 min

    On the morning of Elena’s 18th birthday, Caroline is busy planning a party, but Elena is focused on searching for any clues that might help her discover where Stefan is. Damon is also searching for Stefan, while trying to protect Elena and

  2. S3 E2

    The Hybrid

    Sep 22, 2011741 min

    Klaus puts a plan in motion that will give him even more power, but even with the unwilling participation of werewolf Ray Sutton, things don’t go exactly as Klaus had planned. Damon and Alaric reluctantly go along with Elena’s new strategy

  3. S3 E3

    The End of the Affair

    Sep 29, 20116.243 min

    Klaus and Stefan arrive in Chicago, where Stefan is reunited with a vampire who hasn't really moved on from her interest in him decades earlier. In a flashback to Chicago in the 1920s, Stefan comes face-to-face with a shocking chapter from

  4. S3 E5

    The Reckoning

    Oct 13, 2011843 min

    Despite all that has happened, Caroline is determined to see that Elena, Bonnie, Matt and Tyler all enjoy a traditional Senior Prank Night before the school year begins at Mystic Falls High School. However, when uninvited guests show up, it

  5. S3 E6

    Smells Like Teen Spirit

    Oct 20, 20117.843 min

    On the first day of their senior year, Elena, Caroline, Bonnie and Matt are still reeling from recent events, while Tyler seems to be enjoying everything a little too much. Damon is annoyed by a new houseguest, and everyone is surprised by

  6. S3 E7

    Ghost World

    Oct 27, 20118.143 min

    As Mystic Falls prepares to celebrate the traditional Illumination Night, the town is invaded by spirits of the dead. After a particularly violent encounter with an angry spirit, Damon asks Bonnie to find the reason behind the ghosts' surpr