The official synopsis has been released for the upcoming 14th & 15th Episodes of Season 4. We also have some photos from Episode 14, titled “Down the Rabbit Hole”

CHARLIE BEWLEY FROM “TWILIGHT” GUEST STARS AS ONE OF THE FIVE HUNTERS — On the island, Damon (Ian Somerhalder) has an ugly run-in with a Hunter named Vaughn (guest star Bewley), and realizes he is one of The Five. Stefan (Paul Wesley) confesses his true feelings about the possibility of becoming human again to Elena (Nina Dobrev). When a stunning new piece of information about the cure is suddenly revealed, it changes the stakes for everyone. Jeremy (Steven R. McQueen) helps Bonnie (Kat Graham) recognize what is real and what is an illusion, and Shane (guest star David Alpay) is comforted by a woman from his past, Caitlin (guest star Camille Guaty, “Prison Break”). Back in Mystic Falls, Caroline (Candice Accola) and Tyler (Michael Trevino) find that their attempt to translate the code on the Hunter’s Sword is futile without help from Klaus (Joseph Morgan), who has his own reasons for solving the puzzle. Claire Holt also stars. The episode was directed by Chris Grismer and written by Jose Molina.

And the synopsis for Episode 15, titled “Stand by Me” reads:

THE TERRIBLE TRUTH — When Stefan (Paul Wesley) arrives back in Mystic Falls with Elena (Nina Dobrev) and Jeremy (Steven R. McQueen), Caroline (Candice Accola) is immediately worried about Elena’s state of mind. Stefan reaches out to Dr. Fell (guest star Torrey DeVitto) and Matt (Zach Roerig) for help. Still on the island, Damon (Ian Somerhalder) relays somber news to Rebekah (Claire Holt), and is surprised at her reaction. Together, Damon and Rebekah learn an unexpected bit of recent history from Vaughn (guest star Charlie Bewley). Everyone is horrified when Bonnie (Kat Graham) reveals the rest of Shane’s (guest star David Alpay) plan. Finally, after Damon does his best to help her, Elena comes up with a plan of her own. Lance Anderson directed the episode written by Julie Plec (#415).