The Undead

 is the first episode in Season 4, and 67th overall.

Synopsis
Soon after Elena comes back as a vampire, Stefan and Damon make a disturbing discovery. Caroline finds out that Tyler is still alive, unaware that he is actually Klaus. The darkness inside Bonnie grows and starts to take over her. As the remainders of the originals gather and decide to stay in Mystic Falls, Kol realizes that Rebekah failed to kill Elena. Finally Caroline helps Tyler to build himself a temporary home, and an accident in the Gilbert house quickly turns into violence.

Main Characters

 * as Elena Gilbert
 * as Stefan Salvatore
 * as Damon Salvatore
 * as Caroline Forbes
 * as Bonnie Bennett
 * as Matt Donovan
 * as Niklaus Mikaelson
 * as Meredith Fell

Recurring Characters

 * as Jeremy Gilbert
 * as Rebekah Mikaelson
 * as Kol Mikaelson
 * as Elijah Mikaelson
 * as (stock footage)
 * as (stock footage)

Trivia & Notes

 * This is the first episode in the Post Season 3 Series.