Cast
Cyril Cusack
Dr. Kelly
Karl Stepanek
Dmitri Balinkev
John Welsh
George White - the Gamekeeper
Derek Farr
Ivan Mason / Dr. James Paxton
Ella Raines
Rhona Ellison
Donald Wolfit
Prof. Cattrell
Lisa Daniely
Nurse Mitzi
Bruce Beeby
Dr. Manning
Russell Napier
Scotland Yard Supt. Davidson
Frederick Piper
Medwood Inspector Hayman