Nigel Patrick

Chief Insp. John Edward Johnnoe

Katherine Woodville

Mary Johnnoe

Colin Blakely

Charlie Ruskin

Derren Nesbitt

Bertie Hoyle

Harry Andrews

Supt. Alec Bestwick

Roy Kinnear

Shorty

Margaret Whiting

Maisie Barton

John Cowley

Jim Ruskin

Allan Cuthbertson

Smythe