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)

John Lemont