Milo O'Shea
— Mr. Zero
Phyllis Diller
— Mrs. Zero
Billie Whitelaw
— Daisy Devore
Sydney Chaplin
— Lieutenant Charles
Julian Glover
— Shrdlu
Raymond Huntley
— Smithers
Phil Brown
— Don
Paddie O'Neil
— Mabel
Libby Morris
— Ethel
Hugh McDermott
— Harry
Bill Nagy
— Lawyer
Carol Cleveland
— Judy
Bruce Boa
— Detective
Kenny Damon
— Joe
John Brandon
— First cell jailer
Hal Galili
— Second cell jailer
Tony Caunter
— Third cell jailer
Bill Hutchinson
— Judy's lover
Helen Elliot
— Second apartment girl
C. Denier Warren
— Jury foreman
Tommy Duggan
— Judge
Gordon Sterne
— Yard guard
Lola Lloyd
— Coffee girl
Nicholas Stuart
— District Attorney
George Margo
— Gateman
Allan Surtees
— Apartment tenant
John Bloomfield
— Apartment tenant
Janet Brown
— Fat Woman