Fox has bought biblical thriller script The Unseen, written by John Travis, with Hutch Parker attached to produce, The Hollywood Reporter has learned exclusively.

According to The Hollywood Reporter, the script is based on the short story Mr. Pettinger’s Daemon, which appeared in John Connolly's collection of short fiction stories Nocturnes. The plot centers on a hospital cleric who is tasked with treating a fellow clergyman in a remote parish who has been displaying severe signs of mental illness. When he arrives, he discovers that the root of his colleague's erratic behavior is a biblical force of evil that is trying to surface from deep below the church.

Connolly is perhaps best known for his Charlie Parker series, which began with Every Dead Thing in 1999.

Travis' credits include The New Daughter, starring Kevin Costner, and The Haunting of Molly Hartley, starring Haley Bennett, Jake Weber and Chace Crawford.