Brandon Routh, Gil Bellows and Martin Donovan have joined the cast of the suspense thriller "Unthinkable" for Senator Entertainment says The Hollywood Reporter.

Routh and Bellows play members of an FBI anti-terrorism team run by Agent Brody (Carrie-Anne Moss).

With the help of a black-ops agent (Samuel L. Jackson), they're assigned by an FBI director (Donovan) to interrogate an American Muslim man (Michael Sheen) claiming to have nuclear bombs planted in three U.S. cities.

The Gregor Jordan-directed film will starts filming October 20th in Los Angeles.