Eddie Marsan has signed on to join Patrick Wilson, Jessica Biel and Haley Bennett in the Untitled Patricia Highsmith Adaptation, which was formerly known as The Blunderer.

The plot is based on Patricia Highsmith's novel The Blunderer, centering on a successful man (Patrick Wilson) whose life begins to come apart when his wife (Jessica Biel) is found dead at the bottom of a cliff. He keeps making mistake after mistake as his once-perfect life keeps spiraling out of control. No details were given for Eddie Marsan's character.

Andy Goddard (Downton Abbey) is directing from an adapted screenplay by Susan Boyd, with Christine Vachon, David Hinojosa and Ted Hope producing. Nick Meyer, Marc Schaberg, Kelly McCormick, Stephen Hays, Peter Graham, Alexa Seligman, Jay Taylor, John Jencks and Joe Simpson are executive producing. Shooting has already started in Cincinatti.

Eddie Marsan most recently starred in The World's End, God's Pocket and Filth, and he will next be seen in The Jungle Book: Origins.