Summit Entertainment's upcoming prison drama The Tomb is already shaping up to be a blockbuster, with Sylvester Stallone and Arnold Schwarzenegger both starring. Producer Mark Canton revealed on The Matthew Aaron Show that actor James Caviezel has signed on to play the Warden. Here's what the producer had to say below about his growing cast.

"It's a big deal, because I always wanted Sly and Arnold together. The Expendables is fantastic, but where they're really mono y mono, like in Heat, or a movie of that quality. We have this great director in Mikael Håfström, and yesterday we signed Jim Caviezel to play the Warden. It's going to be a great cast. For me, it's a very big thing to work with those guys together."

The story centers on Ray Breslin (Sylvester Stallone), a security expert who designed the most secure prison known to man. When he's framed for a crime and sent to the prison he designed, he must outsmart himself to escape. Arnold Schwarzenegger plays Church, an inmate who helps his fellow prisoners stay in touch with their own humanity.

Mikael Håfström is directing The Tomb from a script by Miles Chapman and Jason Keller. Production is scheduled to begin this spring in Louisiana.