According to The Hollywood Reporter, Ralph Fiennes is set to star in Malcolm McKay's Who Killed Norma Barnes. The film's producers said Friday that Fiennes will star alongside Emily Mortimer in the movie, which is billed as a dark tale of sexual obsession based on Fyodor Dostoyevsky's "The Idiot."

Scheduled to shoot in the fall, Norma marks the feature debut of writer-director McKay, who has known Fiennes for more than 10 years since the actor's days at the Royal Academy of Dramatic Arts.