Gil Mallory, an actor playing Ellery Queen in a motion picture, is supposed to be shot on camera, then jump up and nab the woman who shot him, exclaiming "Bulletproof vest!" The rehearsal with blanks goes fine. But the ensuing take with the same gun finds it loaded with real bullets, and Mallory drops dead. The film crew tries to carry on, and soon stunt man Mike Hewitt is killed when the car he was driving is rigged to wipe out before he was ready. Are the two murders linked -- and how?
—Peter Harris