
Mystery writer and amateur detective Jessica Fletcher - a down-to-earth, middle-aged widow - ferrets out the criminals in idyllic Cabot Cove, Maine, which apparently is the murder capital of the United States for the show's 12-season run. Though while traveling, she uncovers a fair number of killers as well.

Cabot Cove suspects a woman (Mary Crosby) playing a witch in a community play is the real thing; guest Robert Vaughn.

The would-be producer (Ron Leibman) of the movie adaptation of Jessica's latest book dies, leaving Jessica to identify possible suspects.

While visiting an old friend (Dina Merrill) who runs a Monte Carlo hotel, Jessica investigates the murder of a ruthless businessman with numerous enemies.

While in London, Jessica becomes involved in a murder cover-up by the British Intelligence Agency when she happens upon a disappearing corpse.