A renegade doctor is shot dead and entombed with his fiendish experiments in the basement of an abandoned wing of a mental hospital. Twenty years later, a mysterious woman is admitted with amnesia, and her arrival is marked by an earthquake - which cracks the seal to the Dead Pit, freeing the evil doctor to continue his work.—Brian J. Wright
Jeremy Slate, Cheryl Lawson, Stephen Gregory Foster
IMDB plot
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.