Official Synopsis of "Down the Rabbit Hole" (#4.14)

SPOILER ALERT

Charlir Bewley from "Twilght" guest-star as one of the five hunters - in the island, Damon (Ian Somerhalder) has an ugly altercation with a so-called Hunter Vaughn (guest star Bewley), and realizes that it is one of the five. Stefan (Paul Wesley) confesses his true feelings about the possibility of becoming human again to Elena (Nina Dobrev). When an impressive piece of new information about the cure is suddenly revealed, things change for everyone. Jeremy (STeven R. McQueen) helps Bonnie (Kat Graham) to recognize what is real and what is an illusion, and Shane (guest star David Alpay) is comforted by a woman is his past, Caitlin (guest star Camille Guaty, "Prison Break). Back in Mystic Falls, Caroline (Candice Accola) and Tyler (Michael Treino) found that his attempt to translate the code into the Hunter's sword is useless without the help of Klaus (Joseph Morgan), who has his own reasons to solve the puzzle. Claire Holt also appears. Chris Grismer directed the episode written by José Molina. (#4.14)