Lord Ashfordly is concerned about falling royalties from High Rigg Quarry and asks Blaketon to investigate. The police are concerned about a quantity of explosives which have gone missing from the quarry just before a visit by the defence minister.

A recently widowed woman arrives in Aidensfield wanting to bury her late husband in the family grave, but the dead man's brother refuses to co-operate because of an old feud. Vernon and David pay a visit, hoping to persuade him otherwise - only to find themselves held at gunpoint - and when it emerges the coffin is full of money and the deceased is alive and well, a shocking case of fraud is uncovered. Meanwhile, Oscar is among the locals under suspicion when a widely disliked, hardened criminal returns to the village - and soon ends up murdered.

A runaway heiress accompanies her crooked boyfriend on a series of armed robberies. But when they get into trouble they kidnap Helen, who attempts to persuade the teenager to ditch her partner in crime. Meanwhile, Peggy suggests David should take over the funeral parlour while Bernie is away.