Murder, She Wrote S05E19 - Double Exposure

While visiting Boston, Jessica runs into her former neighbor John Winslow who brusquely insists that he's never seen her before in her life. Quickly dialing up Winslow's wife Maude, Jessica is informed that John died two weeks before! To solve this mystery, Jessica capitalizes upon her friendship with gruff-but-lovable Boston P.I. Harry McGraw.