The Dead Pit

The arrival of an amnesiac patient in a psychiatric hospital somehow frees a mad doctor, who was shot and entombed with his fiendish experiments in an abandoned wing of the asylum 20 years before.

The Dead Pit is a 1991 horror movie directed by Brett Leonard, starring Cheryl Lawson, Stephen Gregory Foster, Danny Gochnauer. It holds an IMDb rating of 5.3/10 from 3,243 votes and runs 1h 35m.