Murder, She Wrote (1984)

Season 4: Episode 15

Jessica visits her old friend Eugene McClendon, who soon stands accused of the murder of an old friend, Jonathan Keeler. While helping clear Eugene's name, Jessica learns that her friend believes he is dying, and is surprised when he asks her to marry him so that she can look after his affairs once he's gone. Jessica agrees, but only so that they can expose Jonathan's true killer.