"An apartment handyman is unusually attached to a pair of boilers he names "Mavis" and "Ethel.""
Richard Hearne
as Mr. Pastry
William Hartnell
as Bert
Austin Trevor
as Sir Hervey Shaw
Joan Marion
as Angela Shaw
Robert Moreton
as Jevons
Ralph Truman
as Inspector Bridger
Ronald Adam
as Psychiatrist
Junia Crawford
as Diana Little
Tony Quinn
as Cracknell
Sylvia Bidmead
as Swissair Girl
Brian Harrington
as Police Doctor
Yvonne Hearne
as Matron
William Mervyn
as Roberts (MI5)
Cyril Renison
as Plain Clothes Officer
Neil Wilson
as Milligan
John Stuart
as Doctor
Leslie S. Hiscott
Writer
Lambert Williamson
Conductor
Producer
Norman Warwick
Cinematography
Director
Terence Verity
Art Direction
Elizabeth Hiscott
Music
Carmen Beliaeff
Editor
John Barrow
Story
