Every year on the anniversary of the famous Monkstead murders, Det-Insp Ridley revisits the scene of the crime. On the tenth anniversary he disappears....
Porter: Edward Kelsey Det-Insp Ridley: John Graham Det-Insp Henley: Michael Kilgarriff Det-Sgt Green: John Rye Det-Insp Saddler: Peter Pratt PC Hart: Ronald Herdman John Manning: John Graham Valery West: Sian Davies