When the Exham-on-Sea residents are targeted by anonymous emails containing apparently harmless nursery rhymes, no one knows whether to laugh or shudder until an unexplained death touches the town. Libby Forest, baker, chocolatier and Exham's very own resident private investigator, alongside her partner Max Ramshore, set out to solve the puzzle before more people die. But when Max's ex-wife arrives on the scene, ahead of Max and Libby's long-awaited nuptials, things go from bad to worse. With the town and their relationship under threat, Max and Libby need the help of the Exham History Society if they're going to find the nursery rhyme killer in time.