Spring, 1949

All of Puddledown is excitedly preparing for the upcoming wedding of Helena Fairfax, the Viscount's daughter, to Walter Evans, a farmer's son. The unlikely love match is the talk of the town, but Hugo Wainwright and Tommy Granger are dealing with a distraction closer to home. Tommy's family have announced their intention to visit.

Hugo wants nothing more than to impress his friend's sister and mother, but Tommy's brother-in-law, the Rev. Daniel Stone, makes it clear from the moment he arrives he has no time for Tommy. Hugo never considered himself a violent man, but Daniel's constant dismissal of Tommy brings all his protective instincts to the surface.

Then the letters start arriving.

The community is torn apart as malicious notes are pushed through doors all over Puddledown, and when Hugo receives one, Tommy starts to panic. The police have no suspects, so it's up to Hugo to expose the culprit before the wedding is ruined and Tommy's family leave, perhaps never to return. Can he solve the mystery, or will the veiled threats of an anonymous stranger drive Hugo and Tommy apart forever?