Check out the new trailer for American Exorcist, starring Bill Moseley, John Bolaris, and Gemma McIlhenny.

A paranormal investigator, trapped in a haunted skyscraper on Christmas Eve. The skeptical young woman, Georgette Dubois, is horrified once confronted with the reality of the supernatural. She risks life and limb to escape her ghoulish prison, stranded on the 11th floor.