A week's holiday in a luxurious Yorkshire time-share is just what Scotland Yard's Superintendent Duncan Kincaid needs. But the discovery of a body floating in the whirlpool bath ends Kincaid's vacation before it's begun. One of his new acquaintances at Followdale House is dead; another is a killer.

Despite a distinct lack of cooperation from the local constabulary, Kincaid's keen sense of duty won't allow him to ignore the heinous crime, impelling him to send for his enthusiastic young assistant, Sergeant Gemma James. But the stakes are raised dramatically when a second murder occurs, and Kincaid and James find themselves in a determined hunt for a fiendish felon who enjoys homicide a bit too much.