The last in the present series of crime stories by Michael Gilbert.
[Starring] Brian Wilde, Kenneth Mackintosh
with Jacqueline Hill
Music composed by Ron Grainer played by the Ron Grainer Sextet

Superintendents Halcro and Maw are determined to break up the protection racket run by Massimo, an Italian with an unsavoury war record, and his gang of trouble makers. Halcro gets a shock when a message comes through on the tape from C.5, a former undercover man named Connor, who is believed to be long since dead. Halcro arranges a secret meeting with Connor and is caught in a murder trap.