Although Constable Murdo has retired, and he and his female friend are happily passing the time watching A Place in the Sun, he is still invaluable at a time of crisis. Despite Brexit, weekly shellfish stocks are leaving the islands for Europe, and being replaced by more unsavory goods. Who is the Big Boss and who are the minions working for him? Murdo may not be the most educated of characters, but he has a generic wisdom that can distinguish a sheep from a goat, so who better to go in search of the truth?