After a series of scientific experiments directed towards freeing the inner man and controlling human personalities, the kindly, generous Dr Henry Jekyll succeeds in freeing his own alter ego, Edward Hyde, a sadistic, evil creature whose pleasure is murder.
Paul Massie
as Dr. Jekyll / Mr. Hyde
Dawn Addams
as Kitty Jekyll
Christopher Lee
as Paul Allen
David Kossoff
as Dr. Littauer
Norma Marla
as Maria
Francis de Wolff
as Inspector
Joy Webster
as Jenny
Magda Miller
as Sphinx Girl (uncredited)
Oliver Reed
as Nightclub Bouncer (uncredited)
Helen Goss
as Nanny (uncredited)
Arthur Lovegrove
as Cabby (uncredited)
Walter Gotell
as Heverton - Second Gambler (uncredited)
