"An underhand solicitor receives threatening notes, and the police are called in to protect him."
Herbert Lom
as Maurice Meister
Donald Wolfit
as Dr. Lomond
Mai Zetterling
as Lisa
Greta Gynt
as Cora Ann Milton
William Hartnell
as Sam Hackett
Norman Wooland
as Inspector Bliss
Denholm Elliott
as John Lemley
Dora Bryan
as Mrs. Hackett
Charles Victor
as Inspector Wembury
Walter Fitzgerald
as Commissioner
John Stuart
as Gardener
John Slater
as Bell
Edward Chapman
as Stranger
Campbell Singer
as Station Sergeant Carter
Edgar Wallace
Theatre Play
Guy Hamilton
Director
William Hutchinson
Production Design
Lesley Storm
Screenplay
Bert Bates
Editor
Val Valentine
Hugh Perceval
Producer
Joseph Bato
Costume Design
Edward Scaife
Director of Photography
Malcolm Arnold
Original Music Composer
Ken Ritchie
Boom Operator
Robert Day
Camera Operator
Eileen Bates
Hairdresser
Muir Mathieson
Music Director
Gerry Fisher
Assistant Camera
