Michael Gough
Dr. Charles Decker
Margo Johns
Margaret
Jess Conrad
Bob Kenton
Claire Gordon
Sandra Banks
Austin Trevor
Dean Foster
Jack Watson
Supt. Brown
George Pastell
Professor Tagore
Vanda Godsell
Bob's Mother
Stanley Morgan
Inspector Lawson
Grace Arnold
Miss Barnesdell
Leonard Sachs
Bob's Father
Nicholas Bennett
Daniel
Kim Tracy
Mary
Rupert Osborne
Eric Kenton
Steven Berkoff
Student on Field Trip (uncredited)