Magnum P.I. and Murder, She Wrote
Episodes: “Novel Connection” and “Magnum on Ice”
The mustachioed private investigator (Tom Selleck) met his match in mystery writer Jessica Fletcher (Angela Lansbury) in this head-scratcher of a crossover. First on Magnum P.I., after Higgins (John Hillerman) and some guests of Robin Masters were almost run off the road, Higgins refused help from Magnum, preferring to consult another private investigator. Said “P.I.” turned out to be none other than Jessica, in Hawaii on vacation. Later on, after tracking down the hitman and killing him in self-defense, Magnum was accused of murder instead when his story doesn’t match up with the crime scene. Jessica then worked to free Magnum and catch the real killer before he killed again.