The Black Sleep(1956)

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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...

The Black Sleep was directed by Reginald Le Borg and released in 1956. It is a horror, science fiction film.

The Black Sleep has a runtime of 1 hours and 22 minutes (82 minutes total).

The cast of The Black Sleep includes Basil Rathbone as Sir Joel Cadman, Herbert Rudley as Dr. Gordon Ramsay, Patricia Blair as Laurie Munroe, Akim Tamiroff as Odo the Gypsy, Phyllis Stanley as Daphne and more.