Infuriated that her holiday was ruined by a mugging, Agatha Raisin decides to open up her own detective agency. The romance-minded sleuth is thrilled by visions of handsome fellow gumshoes and headline-making crimes—but soon finds the only cases she can get are a non-glamorous lot of lost cats and an errant teenager. But when a wealthy divorcée hires the agency to investigate a death threat against her daughter Cassandra, Agatha thwarts a vicious attack on the heiress bride.

Now Agatha is in hot pursuit of the culprit. But when the groom’s father turns up dead, Agatha must untangle a growing list of suspects, from Carsely’s quiet village lanes to Paris’ most fashionable streets. Soon the willfully undaunted Agatha is in trouble with French and British police; on the outs (again) with old friends—and dead in the sights of a murderer.