When Vampire Diaries returns, Elena (Nina Dobrev) will have a lot of questions. Mainly, why on Earth does she look like Stefan's dead lover? Based on the sneak peek below, it looks like she'll turn to the other Salvatore brother for "comfort" — and the two of them becoming friends can only mean bad things are ahead.

CW plans Vampire Diaries marathon

Also, Bonnie (Katerina Graham) is coming closer the uncovering the past, and goes to the place where all the murder began in Mystic Falls. Get a sneak peek at the return of Vampire Diaries below, and don't forget to tune in all this week for the Dairies marathon on the CW. The show returns on Thursday, Jan. 21.