A psychopathic murderer stalks the aisles of a trans-Atlantic Jumbo jet, setting off predictable panic amongst the star-studded cast of passengers. Even if you think you can identify the killer fairly early on, there's a final twist that's rather more difficult to foresee. Even so, it's hard to take this type of movie too seriously since those side-splitting 'Airplane! ' spoofs, particularly when - as here - the pilot is played by Robert Stack, who has since mercilessly guyed his own tough-guy image in those self same comedies.

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