An urgent note from a friend spurs Ann Gay to visit her cousin, Jacqueline Heaton. Upon her arrival at Fiddler's Fingers, a remote, estate on Lake Superior, Ann immediately senses her cousin's fear - someone has been playing increasingly malicious tricks on the Heatons, and all signs point to Jacqueline as the instigator. Ann quickly resolves to take Jacqueline and her young daughter away from the danger. But what began as seemingly trivial pranks escalates to direct attacks and murder. Ann realises that the only way to prove her cousin's innocence is by snaring the murderer herself.