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When Mary Rose Welch (Joan Caulfield) is injured in a car accident, she prevails upon Jessica (Angela Lansbury) to travel to the town of Eden, where Mary's sister has recently died under mysterious circumstances. Figuring that the best way to get to the truth is to adopt a guise, Jessica poses as Mary and shows up in Eden for the funeral. It doesn't take her long to determine that this "idyllic" community is hardly Edenlike, and that skeletons in the closet abound! Among the suspects on this occasion are Sheriff Landry (Roy Thinnes), Dr. Lynch (MacDonald Carey) and realtor C.J. Dobbs (Stuart Whitman)--all of whom knew Mary a little more intimately than they're willing to reveal.