A lawyer receives a note telling him that he'll be dead in 48 hours - and Scotland Yard must work fast to uncover the serial killer known as 'The Ringer'.
Det. Insp. Alan Wembury
Dr Anthony Lomond
Maurice Meister
Samuel Cuthbert 'Sam' Hackett
Cora Ann Milton
Inspector Bliss
Mary Lenley
John Lenley
Det. Sgt. Richards
Police Station Sergeant
Prison Governor
Col. Walford
Drunken Scotsman (uncredited)
