London is terrorized by a vicious sex killer known as The Necktie Murderer. Following the brutal slaying of his ex-wife, down-on-his-luck Richard Blaney is suspected by the police of being the killer. He goes on the run, determined to prove his innocence.

Jon Finchas Richard Ian "Dick" Blaney
Barry Fosteras Robert "Bob" Rusk
Barbara Leigh-Huntas Brenda Margaret Blaney
Anna Masseyas Barbara Jane "Babs" Milligan
Alec McCowenas DCI Tim Oxford
Vivien Merchantas Mrs Oxford
Billie Whitelawas Hetty Porter
Clive Swiftas Johnny Porter
Bernard Cribbinsas Felix Forsythe
Michael Batesas DS Spearman
Gilbert Taylor