In 19th century London, Dr. Charles Marlowe experiments with a mind-altering drug which causes him to develop an evil alter ego, Edward Blake, whom his colleague begins to suspect is someone that is blackmailing Marlowe.
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Verdict: Unknown
> Stephen Weeks (Director)
> Michael Stevenson (Second Assistant Director)
> Al Burgess (First Assistant Director)
> Moray Grant (Director of Photography)
> Robert Louis Stevenson (Novel)
> Milton Subotsky (Screenplay)
