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 travelling, she uncovers a fair number of killers as well.
...Beverly. Jessica and Amos investigate the death of a night deputy's wife. (S4 Ep7)
After Jessica discovers that the plot of her new book has been plagiarised for a TV show, the producer is found dead. (S4 Ep8)
Jessica helps a friend unravel the mystery of her sister's sudden death in the town of Eden. (S4 Ep9)
A Native American appears in Cabot Cove with a land grant stating that the town and its surrounding land are his. (S4 Ep10)
Grady is suspected of murder while he and Jessica are staying in an upmarket hotel courtesy of his frat brother Gary. (S4 Ep11)
...Mrs Fletcher's Chowder? Shortly after Sheriff Tupper's sister leaves her husband and seeks refuge in Cabot Cove, a murder occurs. (S4 Ep12)
Leonard, husband of Jessica's niece Carrie, comes under suspicion when a body is found in his observatory. (S4 Ep13)
Seth's brother presents his new wife with a priceless cursed ruby, but he is later found strangled, with the gem missing. (S4 Ep14)
Jessica hears the confession of hit man while at a convention in Connecticut, leading her to uncover a mysterious house and in important foreign dignitary. (S4 Ep16)
An organised crime syndicate is targeting the Gambini family winery to take over and it's up to Jessica to unearth who is behind the murder of a mafia hit-man. (S4 Ep17)
When an eccentric recluse dies it falls on Jessica to execute her will. But arguments soon start raging about her estate, and the result is of course a murder. (S4 Ep18)
Jessica is excited to return to NYC for the announcement of her nephew's engagement. When a restaurant employee is murdered the whole engagement is threatened. (S4 Ep19)
Jessica's niece is head-over-heels in love with a rodeo rider. But is she turning a blind eye that he may be a killer? (S4 Ep20)
A former student of Jessica's gets a play based on one of her novels on Broadway, but she soon finds herself in the middle of the war between two rival critics. (S4 Ep21)
Jessica must help an old friend again who is running as a senatorial candidate. When her campaign manager is murdered Jessica must prove her innocence. (S4 Ep22)