Al must protect Professor Moses, a nuclear scientist, and his documents, during a special flight with only eight passengers, to Melbourne, where an important conference will be held with five of the world's top scientists. However, when the in-flight film starts, "The Man" in the film, puts all five scientists on trial for murder, for their country's crimes against the Earth, finds them guilty, and sentences them all to die. As the film describes the crimes of each scientist, each scientist dies every hour, on the hour, one by one. Al finally figures out that everyone on the flight has been poisoned with time capsules, and that the deaths are being triggered by sound waves from a control device that is somewhere on the plane. The problem is that Al has only five minutes left to find this device and disarm it, before it triggers the poison in his system!
Robert Wagner (Alexander Mundy), Joseph Cotten (Mr. Jack), George Murdock (Devon)
Lloyd Bochner (Dr. George Kingsford), Christina Sinatra (Ellen Porter), Katherine Woodville (Laurie MacGwire), Wally Cox (Professor Moses), John Colicos (The Man), Keye Luke (Dr. Tanu), Kenneth Tobey (Captain Benny), Richard Loo (General Wong), Hanna Hertelendy (Dr. Kovney), Ben Astar (Dr. Dubleski)