Jack Warner

Det. Insp. Fred Fellows

Yolande Donlan

Jean Sherman

Michael Goodliffe

Clyde Burchard

John Le Mesurier

Mr Simpson

John Barron

Ray Tenby

Moira Redmond

Joan Simpson

Christine Bocca

Mrs Simpson

Brian Oulton

Restlin

Ray Barrett

Sgt Gorman

Norman Chappell

Andy Roach

Joan Newell

Mrs Banks

Ronald Lewis

Det. Sgt. Jim Wilks

Peter Ashmore

Mr. Bunnell (uncredited)

Timothy Bateson

Porter (uncredited)

Geoffrey Bayldon

Constable at Murder Scene (uncredited)

Val Guest