Overview
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'.
Cast
- Patrick Barr as Det. Insp. Alan Wembury
- Alexander Knox as Dr Anthony Lomond
- Wilfrid Lawson as Maurice Meister
- Sonnie Hale as Samuel Cuthbert 'Sam' Hackett
- Louise Henry as Cora Ann Milton
- John Longden as Inspector Bliss
- Patricia Roc as Mary Lenley
- Peter Croft as John Lenley
- Arthur Hambling as Det. Sgt. Richards
- George Merritt as Police Station Sergeant