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