"This movie debut for saucy British TV comic Benny Hill has Benny leaving his job as a sweeper after winning some money. He becomes a private detective and investigates a plot to assassinate British scientists."
Benny Hill
as Hugo Dill
Belinda Lee
as Frankie Mayne
David Kossoff
as Zacco
Garry Marsh
as Det. Inp. Hancock
Denis Shaw
as Professor Stumpf
Ernest Thesiger
as Sir Walter
George Margo
as Barakov
Frederick Schiller
as Gruber
Thorley Walters
as Raymond Courtney
Stratford Johns
as PC Coleman
Warwick Ashton
as PC Roberts
Norah Blaney
as The Actress
Charles Hawtrey
as Disc Jockey
Nicholas Phipps
as Scientist
Peter Bull
Gibb McLaughlin
Ernest Jay
Harold Scott
Terence Alexander
as Radio Show Official (uncredited)
Irene Handl
as Customer (uncredited)
Arthur Lowe
as Shop demonstrator (uncredited)
Glyn Houston
as Arresting Policeman (uncredited)
Jeremy Hawk
as Himself
Philip Stainton
as Frankie's Agent
T. E. B. Clarke
Screenplay
Basil Dearden
Director
E.R. Taylor
Special Effects
Michael Balcon
Executive Producer
David Tringham
Third Assistant Director
Co-Producer
Michael Relph
Producer
Anthony Mendleson
Costume Design
Stephen Dalby
Sound Supervisor
Peter Tanner
Editor
Dock Mathieson
Conductor
Daphne Martin
Hairstylist
W. Simpson Robinson
Scenic Artist
Leo Wilkins
Sound Recordist
Jean Graham
Continuity
Harry Frampton
Makeup Artist
David Peers
Unit Production Manager
Tom Pevsner
Assistant Director
Alastair McIntyre
Sound Editor
Otto Heller
Director of Photography
Hal Mason
Production Supervisor
Chic Waterson
Camera Operator
Jim Morahan
Art Direction
Philip Green
Original Music Composer