Indie producer Mediamax has started shooting the Mary Harron gothic horror pic The Moth Diaries in Montreal, with Scott Speedman, Lily Cole, Sarah Gadon and Sarah Bolger toplining the Canadian-Irish co-production.

The genre pic gets Canadian director Harron back onto familiar territory after her 2000 break-out hit American Psycho, as The Moth Diaries features Bolger as a teenage girl at a boarding girl who suspects her roommate is a vampire.

The film’s producers are Sandra Cunningham of Strada Films, Karine Martin of Mediamax and David Collins of Irish production company Samson Films. Ronald Gilbert of Mediamax is the co-producer. Executive producers are Edward R. Pressman of Edward R. Pressman Film, Jean-François Doray and Louis-Simon Ménard of Mediabiz International.

Production is set to continue in and around Montreal until October 8.

This story was updated September 10 at 9:30.