"A trip to the theatre changes a meek bank clerk's life, as he undergoes hypnosis and leaves without being woken up. Suddenly, he believes he is the world's greatest lover and becomes a terrorizing Casanova."
George Cole
as Henry Sterling
Veronica Hurst
as Florence Sterling
Heather Thatcher
as Mrs Whittle
Jon Pertwee
as Charley Sterling
William Hartnell
as Detective Inspector Martin
Sid James
as Mr. Hobson
Diana Decker
as Angel
Joan Sims
as Beryl
James Hayter
as Dr. Smith
Brian Oulton
as Mr. Jackson
Alan Badel
as The Great Mendoza
Wilfred Boyle
as Albert Boyle
Alexander Gauge
as Mr. Billing
Jill Melford
as Honey
Frank Birch
as Mr. Brown
Arthur Howard
as Mr. Coding
Lionel Jeffries
as Mr. Frobisher
Josephine Douglas
as Doctor's Receptionist
Diana Hope
as Blonde In Bank
Martin Wyldeck
as Commissionaire
Richard Massingham
as Stout Man
Peter Butterworth
as Stage Manager
Brian Wilde
as Clerk
Nan Braunton
as Neighbour
Wally Patch
as Bookmaker
Lucy Griffiths
as Blonde Outside Bank
Harry Herbert
as Stage Door Keeper
Russ Allen
as Sporty Type
Michael Anderson
Director
John Redway
Casting
Bob Clark
Makeup Artist
Max Benedict
Editor
Terence Verity
Art Direction
Wilfred Eades
Production Manager
June Faithfull
Continuity
Louis Levy
Conductor
A. G. Scott
Hairstylist
Hamilton G. Inglis
Producer
Angela Morley
Original Music Composer
Vernon Sylvaine
Writer
Erwin Hillier
Director of Photography
Norman Warwick
Camera Operator
Les Hammond
Sound Recordist
Gordon Scott
Assistant Director