Maxwell Reed
— Frank Smith
Elizabeth Allan
— Dr. Phillipa Roberts
Patrick Barr
— Dr. Geoffrey Allen
Russell Napier
— Insp. Durham
Vanda Godsell
— Mae Smith
Neil Hallett
— Det. Supt. John Harris
Gibb McLaughlin
— Spencer Simon
Edwin Richfield
— Henry Arthur Ryan
Mark Bellamy
— Louie
Bill Nagy
— Charlie
Anthony Valentine
— Tony
Marianne Stone
— Hospital Technician (uncredited)