Nigel Patrick ... Chief Insp. Johnnoe
Katherine Woodville ... Mary Johnnoe
Colin Blakely ... Charlie Ruskin
Derren Nesbitt ... Bertie Hoyle
Harry Andrews ... Supt. Bestwick
Michael Coles ... Ben
John Cowley ... Jim Ruskin
Allan Cuthbertson ... Smythe
Frank Finlay ... Leon Sale
Ronald Hines ... Lewis
Roy Kinnear ... Shorty
Peter Prowse ... Lonergan
George Sewell ... Hill
Kenneth J. Warren ... Lou Waites
Brian Wilde ... Lipson