Dr. Jekyll and Sister Hyde (1971)

General Information

Director: Roy Ward Baker

Writer: Brian Clemens

Cast: Ralph Bates, Martine Beswick, Gerald Sim, Lewis Fiander, Dorothy Alison, Neil Wilson, Ivor Dean, Paul Whitsun-Jones, Philip Madoc, Tony Calvin, Susan Brodrick, Dan Meaden, Virginia Wetherell, Geoffrey Kenion, Irene Bradshaw, Anna Brett, Jackie Poole, Rosemary Lord, Petula Portell, Pat Brackenbury, Liz Romanoff, Will Stampe, Roy Evans, Derek Steen, John Lyons, Jeannette Wild, Bobby Parr, and Julia Wright

Composer: David Whitaker

Release Date: 10/17/1971

MPAA Rating: PG



Extracting female hormones from fresh cadavers, Victorian scientist Dr. Henry Jekyll (Ralph Bates) concocts a formula to eliminate disease and prolong the average life expectancy. Complications arise when Dr. Jekyll, having tested the potion on himself, Dr Jekyll and Sister Hydetransforms into an evil and seductive woman known as Mrs. Hyde (Martin Beswick)—with a bizarre outcome.

Introducing a clever, if somewhat campy, twist on Robert Louis Stevenson’s Strange Case of Dr Jekyll and Mr Hyde, Dr. Jekyll and Sister Hyde is a worthwhile effort by Hammer Film Productions. Especially unique is the historical backdrop of this offering, which adds an authentic layer to the sordid crimes committed by Dr. Jekyll and his feminine alter ego.



Combining the Jekyll/Hyde theme with the real-life murders of Jack the Ripper and Burke and Hare, this film maintains a strong emphasis on Gothic horror elements—unlikeDr Jekyll and Sister Hyde The Two Faces of Dr. Jekyll (Hammer’s first adaptation of Stevenson’s novella), which forgoes atmosphere and suspense in favor of philosophical study.

Also captivating is the performance of Ralph Bates (known to Hammer buffs for The Horror of Frankenstein and Taste the Blood of Dracula), who embodies the tormented pathos that many associate with a morally conflicted mad scientist. (One should note, however, that by killing innocent women in his Dr. Jekyll form, Bates’ character fails to maintain a strong ethical counter to his “evil” persona—unlike the original Dr. Jekyll, whose upstanding nature serves to contrast the vile and malicious tendencies of Mr. Hyde.)



Dr Jekyll and Sister HydeIndicating that female hormones can extend the human lifespan well beyond natural limits, Dr. Jekyll and Sister Hyde may evoke criticism for its farfetched and unrealistic premise—even by the standards of a science fiction horror story. (Dr. Jekyll never explains, for instance, why women live only slightly longer than men despite producing large quantities of estrogen—supposedly the “elixir of life” within the context of this film.)



Examining the age-old question of whether the ends justify the means, Dr. Jekyll and Sister Hyde deserves praise for its thought-provoking moral commentary. Specifically, Dr. Jekyll decides to murder individual women in order to continue his experiments, convinced that his research will improve the entire human race long-term—a haunting statement on how scientific discovery often comes at a terrible cost.


Concluding Comments

Dr. Jekyll and Sister Hyde offers a compelling update on a classic narrative. British horror fans may therefore enjoy this film, which benefits from eerie locational choices, harrowing murder scenes, and intense romantic subplots.


Overall Quality: 7/10


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One thought on “Dr. Jekyll and Sister Hyde (1971)

  1. One of the best late period Hammers. The Transgender spin is clever and Martine Beswick is great in the role…. a shame Hammer couldn’t find more to do with this unique actress.

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