Dornan is to be joined Ben Mendelsohn (Rogue One: A Star Wars Story) and real-life sisters Loa Kirke (Mistress American) and Jemima Kirke (Girls). The story follows two sisters and their relationships: former teen prodigy turned drug user Andrea (Jemima Kirke), who starts an affair with an acclaimed writer Nick (Dornan); and her sister Tara (Lola Kirke) whose relationship with her older boyfriend Martin (Mendelsohn) breaks down when she becomes
involved with an even older man.
Forrest is to make her directorial debut with the film as well as write the screenplay, with the film set to be announced at this month’s Toronto International Film Festival as it looks for buyers.
Anthropoid, Dornan’s latest film, is in cinemas now with another, The 9th Life of Louis Drax, out this Friday. The anticipated Fifty Shades sequel, Fifty Shades Darker, is set for release in February 2017.