Perfect Crime is a 1987 murder mystery/thriller play by Warren Manzi. It tells the story of Margaret Thorne Brent, a Connecticut psychiatrist and potential cold-blooded killer who may have committed "the perfect crime." When her wealthy husband, W. Harrison Brent, turns up dead, she gets caught in the middle of a terrifying game of cat and mouse with her deranged patient, Lionel McAuley, and Inspector Ascher, the handsome but duplicitous investigator assigned to the case. Perfect Crime is the longest-running play in New York City history, with over 12,000 performances.