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?
| Directing | Ishirō Honda | Director |
| Writing | Takeshi Kimura | Writer |
| Production | Tomoyuki Tanaka | Executive Producer |
| Sound | Kunio Miyauchi | Original Music Composer |
| Camera | Hajime Koizumi | Director of Photography |
| Editing | Kazuji Taira | Editor |
| Art | Kiyoshi Shimizu | Production Design |
| Crew | Eiji Tsuburaya | Special Effects |
| Directing | Kôji Kajita | Assistant Director |
| Visual Effects | Eiji Tsuburaya | Visual Effects |
| Visual Effects | Teruyoshi Nakano | Visual Effects |
| Visual Effects | Eiji Tsuburaya | Visual Effects Director |