Louis Hayward

as John Tasker

as Ephraim Poster

as Paul Marriott

as Bill Duncan

as Edward Jekyll / Dr. Henry Jekyll / Mr. Hyde

as Richard Orland

as Frank Elford

as Count Amalfi

as Barry Gilbert

as Jim Cameron

as D'Artagnan

as Randy Townsend

as John Tasker

as Stacy Blackwell

as Mike Fenby

as Dr. Stephen Brigham (segment "Certain Shadows on the Wall")

as David Wilcox

as Ashley Cowan

as Mark

as Jeremy (replaced by Dan O'Herlihy)

as Michael Lanyard

as Millotson