Ariadne Oliver, the famous mystery novelist, has been called to Devon to create the ultimate “murder hunt” for wealthy financier George Stubbs. But she begins to suspect foul play and calls on her old friend Hercule Poirot to apply his uniquely analytical mind to a crime that, as yet, only exists in Oliver’s imagination. In this fiendishly complicated murder mystery within a murder mystery, a boathouse strangling, a vanishing, and an ancestral estate present a web of secrets and lies that threaten to thwart not just the crime writer but the celebrated Belgian sleuth himself.