The film is based on Patricia Highsmith’s lesbian love story published in 1952 under Highsmith’s pseudonym, Claire Morgan.
In the movie, Mara falls in love with Cate Blanchette, who is trapped in a loveless marriage.
“We’re over the moon to have Rooney on board. I’ve been a tremendous admirer of her work from the beginning, so the thought of bringing her together with Cate onscreen is thrilling to say the least,” Haynes said.
Filming starts early next year.