Scott Speedman, Lily Cole, Sarah Gadon and Sarah Bolger have joined The Moth Diaries, directed by Mary Harron, according to The Hollywood Reporter.

The Moth Diaries is a gothic horror based on the Rachel Klein's novel of the same name.

Sarah Bolger portrays a young girl in an elite boarding school who befriends two fellow students, played by Sarah Gadon and Lily Cole, while developing a crush on her English professor (Scott Speedman).

The Moth Diaries will film in and around Montreal until Oct. 8.