Musical version of the story in which Dr. Henry Jekyll experiments with scientific means of revealing the hidden, dark side of man and releases a murderer from within himself.
| Actor | Role |
|---|---|
 Kirk DouglasDr. Jekyll / Mr. Hyde | Dr. Jekyll / Mr. Hyde |
 Susan GeorgeAnne | Anne |
 Stanley HollowayPoole der Butler | Poole der Butler |
 Michael RedgraveDanvers | Danvers |
 Donald PleasenceFred Smudge | Fred Smudge |
 Judi BowkerTupenny | Tupenny |
 Susan HampshireIsabel | Isabel |
| GGeoffrey MooreWainwright | Wainwright |
 Nicholas SmithHastings | Hastings |