October, 1975. When Dr Lance Elliot receives a call from his elderly father to say he has been arrested for arson, he can hardly believe it. Especially when he discovers that the intended victim was his father’s neighbour, Oliver Lightoller, with whom his father has a long-running feud. But things quickly take a dark turn when Lance stumbles across Lightoller’s body, which has been pinned by an old sword to an office chair in the dead man’s South London antiques shop. The redoubtable Inspector Masson is keen to find his man, and seems sure that Dr Elliott and his father are involved in the murder. Will Lance be able to get to the bottom of the mystery and prove their innocence?