Clayton Adams
A group of UAC Marines responds to a distress call from a top-secret scientific base on Phobos, a Martian moon, only to discover it's been overrun by demons.
After a treacherous attack, Secret Service agent Mike Banning is charged with attempting to assassinate President Trumbull. Chased by his own colleagues and the FBI, Banning begins a race against the clock to clear his name.
