"When a hit and run patient is murdered an attending doctor is placed under suspicion."
Robert Beatty
as Dr. Mark Benton
Elizabeth Sellars
as Della Freeman
Peter Coke
as Det. Insp. George Bellamy
Hugh Kelly
as Dr. Craig
Vida Hope
as Jackie Leroy
Janet Butler
as Sister Rogers
Ferdy Mayne
as Charles Constance
James Raglan
as Supt. Grayson
Hugh Pryse
as Mr. Rattray
George Benson
as Prescott
Roger Delgado
as Felix Galegos
Frank Atkinson
as Railway Ticket Clerk (uncredited)
Donald Conlon
as Helios Restaurant Patron (uncredited)
Arthur Dibbs
Robert Gregory
as Man at Northolt Airport (uncredited)
Jean Hardwicke
as Sister (uncredited)
Barry Johns
as Hospital Orderly (uncredited)
Anthony Lang
as Johnny (uncredited)
Ronald Leigh-Hunt
as Sgt. Lewis (uncredited)
Richard Neller
as Hospital Visitor (uncredited)
Harold Sanderson
Marc Sheldon
as Waiter (uncredited)
Toke Townley
as Fred Barker (uncredited)
Martyn C. Webster
Director
A.R. Rawlinson
Screenplay
Francis Durbridge
Original Series Creator
Gerald Gibbs
Director of Photography
John O'Gorman
Makeup Artist
Ernest G. Roy
Producer
Wilfred Burns
Music
E.S. Laurie
Production Manager
Bernard Robinson
Art Direction
Marjorie Owens
Continuity
Joseph Sterling
Editor
Betty Lee
Hairdresser
Harry Raynham
Sound
W. H. Lindop
Sound Recordist
Conductor
Peter Lamb
Clapper Loader
Olive Swinney
Wardrobe Assistant
Noel Rowland
Camera Operator
Buddy Booth
Third Assistant Director
Pat Kelly
Assistant Director
