A potential presidential nominee is killed in what appears to be a tragic car accident, but by chance the audio of the incident is captured by movie sound technician Jack Terry (John Travolta). Playing it back, he comes to suspect that the crash may actually have been an assassination, and begins to piece together the evidence to prove it. But do the authorities want the story to get out? And is Sally (Nancy Allen) - an escort who survived the crash who is befriended by Jack - being stalked by a crazed serial killer? Brian De Palma stirred together Antonioni's Blow Up, the Zapruder film and yes Hitchcock, to create one of his most lavishly stylish and sinuous thrillers, featuring superb supporting work from Dennis Franz and John Lithgow and boasting one of Pino Donaggio’s most evocative scores.