Horror Sci-Fi
In 19th century England, a noted brain surgeon rescues a former student from being hanged on a false conviction for murder, and spirits him away to an ancient, repurposed abbey far in the countryside. There, he connives his pupil into assisting him in mapping the functions of the various parts of the human brain, using living subjects who are under a terrible animation-suspending drug called "black sleep". Subsequently, the student, along with the daughter of one of the subjects, discover that most of these subjects have survived but are being kept in a dungeon-like cellar, in various stages of physical and mental derangement...
Directed by
Reginald Le Borg
John Carradine
Bohemund
Patricia Blair
Laurie Munroe
Basil Rathbone
Sir Joel Cadman
Lon Chaney Jr.
Dr. Munroe, aka Mungo
Bela Lugosi
Casimir
Claire Carleton
Carmona Daly
Akim Tamiroff
Odo the Gypsy
Phyllis Stanley
Daphne
Herbert Rudley
Dr. Gordon Ramsay
Tor Johnson
Mr. Curry
George Sawaya
Sailor-Subject
Sally Yarnell
Female Subject
Peter Gordon
Sgt. Steele
Clive Morgan
Roundsman Blevins (uncredited)
Louanna Gardner
Angelina Cadman
John Sheffield
Det. Redford (uncredited)

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