IFC Films has acquired U.S. rights to director Mary Harron’s “The Moth Diaries” three months after the gothic thriller played at the Venice and Toronto film festivals.

IFC announced the deal Monday. It didn’t indicate when it will release the pic, presented by Alliance Films and Edward R. Pressman.

“The Moth Diaries,” based on the novel by Rachel Klein, was adapted by Harron and stars Lily Cole, Sarah Gadon, Sarah Bolger and Scott Speedman. Karine Martin and David Collins are producers; Sandra Cunningham, Pressman, Mark Slone, Jean-Francois Doray, Louis-Simon Menard, Norton Herrick, Zygi Kamasa and Jon Katz exec produced.

Story centers on Bolger’s character, a young girl haunted by her father’s suicide who’s a student at an exclusive female boarding school. She pours her heart out in a diary, much of it focused on her beloved roommate — but their relationship changes drastically with the arrival of a mysterious new student, portrayed by Cole.

Arianna Bocco, senior VP of acquisitions and productions for Sundance Selects/IFC Films, negotiated the deal for the film with Bart Walker at Cinetic Media on behalf of the filmmakers.