Michael Gough
Dr. Christian Storm
Robin Askwith
Jason Jones
Vanessa Shaw
Judy Peters
Dennis Price
Mr. Pollack
Ellen Pollock
Olga ("Aunt Harris")
Skip Martin
Frederick
Kurt Christian
Abraham Warren
Barbara Wendy
Millie
Kenneth Benda
Carter
Martin Grace
Bike Boy
Colin Skeaping
Bike Boy
George Herbert
Laboratory Assistant
Antony Balch
Bearded Man at Club / Bike Boy (uncredited)
Richard Gordon
Man in Club