Murder on Flight 502 is a 1975 American made-for-television drama mystery thriller film directed by George McCowan. The film stars Robert Stack, Sonny Bono and Farrah Fawcett-Majors, along with an all-star ensemble television cast in supporting roles. It was inspired by the success of the Airport films. Plot TOA airlines flight 502 takes off from New York City to London. At the airport, a bomb threat in the airline's first-class passenger lounge turns out to be an elaborate prank. Safety official Donaldson receives a letter explaining that a series of murders will take place on Flight 502 before it lands. Donaldson and his team go over the backgrounds of all the passengers to find possible suspects. At first, teenage passenger Millard Kensington is suspected because he has a history with the airline as a known prankster. Although the teenager admits he did place the fake bomb in the passenger lobby, he is clueless about the letter. Suspicion next focuses on passenger Otto Gruenwaldt, who blames fellow passenger Dr. Kenyon Walker for failing to save Gruenwaldt's dying wife. Gruenwaldt suffers a heart attack on board and Dr. Walker rushes to aid the dying man. Dr. Walker injects Gruenwaldt with a life-saving drug. Captain Larkin demands Walker surrender the used syringe, implying it may be needed as evidence. Walker refuses. A break in the investigation comes when a priest on board is revealed as an imposter and a known thief. Detective Myerson looks for the priest, but finds him dead in the dumbwaiter. At this point the threatening letter's contents are revealed to the passengers. Soon a second murder occurs; flight attendant Vera Franklin is found dead by the co-pilot. Concerned that he may be at risk, passenger Paul Barons confesses to Myerson that he committed the bank robbery, and that the priest and Franklin were both involved in smuggling the money out of the country on the aircraft. Barons says he is the next target. Myerson agrees and pulls out a gun, proving he is the killer, having snapped when Barons escaped justice for his crime after no proof was found. Myerson takes the passengers hostage and explains he murdered the priest and looked through the luggage of the crew and found the money in Franklin's bag. Captain Larkin makes a drastic move to distract Myerson by releasing the oxygen masks and going for the gun. In the ensuing struggle, Barons