Starring Scott Speedman, Sarah Bolger and Lily Cole, the film is about a girl at an all-female boarding school who fears that her new roommate, played by Cole, may be a vampire.
The movie has been directed by American Psycho director Mary Harron, who has been tapped to direct another teenage drama called Wicked Lovely.
Scott Speedman plays an English teacher with a keen knowledge in vampire folklore who helps Bolger's character unravel the mystery.
Speedman is currently starring in The Vow.
The Moth Diaries is scheduled for release in the US on April 20. A UK release date has not yet been confirmed.
Watch the trailer for The Moth Diaries below: