A librarian is subject to a scientific experiment which goes wrong and transforms him into 'The Human Vapour'. He uses his new ability to rob banks to fund the career of his girlfriend, a beautiful dancer. The Human Vapour is ruthless in his quest for money and kills anyone who stands in his way, especially police. He soon becomes Tokyo's most wanted criminal. Can he be stopped before he kills again?
Something Evil Has Drifted Into the City.
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Did You Know?
Cult music group Man or Astroman? took their name from a line in the film's trailer. See more
Although conceived as a literary and character driven story, the Japanese version, which contains footage not in the U.S. version, is told for almost the first third as a mystery. The re-edited version from Brenco has these parts of the story told from Mizuno's point of view, which Yoshio Tsuchiya prefers. See more