The Mystery Of Three Quarters by Sophie Hannah

When several strangers confront Hercule Poirot claiming he sent them accusatory letters alleging they murdered elderly Barnabas Pandy, who supposedly drowned in his bathtub, he is drawn into a puzzle of forged missives, tangled family ties, and long-buried grievances. With Inspector Catchpool, he traces the four recipients’ connections to the dead man, tests alibis and motives, and unravels a meticulous scheme that transforms a presumed accident into a web of guilt, deception, and ultimately, justice.

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