Former “American Idol” contestant and Shark Night star Katharine McPhee is set to star in screenwriter Paul Tamasy’s (The Fighter) directorial debut Depravity, a psychological thriller written by crime novelist Dennis Lehane (Shutter Island, Mystic River).

Depravity follows a group of roommates who kill a man they mistakenly take to be a killer, causing them to face a true terror and their own… wait for it… depravity. Deadline reports that McPhee will play a twentysomething the roommates try to use as a scapegoat.

McPhee is best known for placing second on Fox TV’s “American Idol” competition and for starring on NBC’s recently cancelled musical drama “Smash.”