In a peaceful retirement village, four unlikely friends meet weekly in the Jigsaw Room to discuss unsolved crimes; together, they call themselves the Thursday Murder Club. When a local developer is found dead with a mysterious photograph left next to the body, the Thursday Murder Club suddenly find themselves in the middle of their first live case.

Steve Wheeler is enjoying retired life. He still does the odd bit of investigation work, but he prefers his familiar routines: the pub quiz, his favorite bench, his cat waiting for him at home. His days of adventure are over. Adrenaline is daughter-in-law Amy’s job now. Amy Wheeler thinks adrenaline is good for the soul. Working in private security, every day is dangerous. She’s currently on a remote island protecting mega-bestselling author Rosie D’Antonio, until a dead body and a bag of money mean trouble in paradise. So she sends an SOS to the only person she trusts . . .

The story opens with the apparently accidental drowning of a sixth form student in the Norfolk countryside. As a matter of routine, or so it seems, the case passes across the desk of Detective Sergeant Smith, recently returned to work after an internal investigation into another case that has led to tensions between officers at Kings Lake police headquarters. As an ex-DCI, Smith could have retired by now, and it is clear that some of his superiors wish that he would do so.

It is 1946, and war-weary young ex-intelligence officer Lane Winslow leaves London to look for a fresh start. When she finds herself happily settled into a sleepy hamlet in the interior of British Columbia surrounded by a suitably eclectic cast of small-town characters, she feels like she may finally be able to put her past to rest. But then a body is discovered, the victim of murder, and although she works alongside the town's Inspectors Darling and Ames to discover who might have possibly have motivation to kill, she unknowingly casts doubt on herself.

Richard is a middle-aged Englishman who runs a B&B in the fictional Val de Follet in the Loire Valley. Nothing ever happens to Richard, and really that’s the way he likes it. One day, however, one of his older guests disappears, leaving behind a bloody handprint on the wallpaper. Another guest, the exotic Valérie, persuades a reluctant Richard to join her in investigating the disappearance. Richard remains a dazed passenger in the case until things become really serious and someone murders Ava Gardner, one of his beloved hen...and you don’t mess with a fellow’s hens!