Charles, a talented but poor chemist, has become a wealthy man overnight. The industry is all about his new invention. But the next day, his wife suddenly dies. Nobody suspects anything bad at first, but then Detective Inspector Morland shows up and begins an insidious game of questions and answers. Poison has been found in the contents of the dead woman's stomach.
Unfortunately the movie Das tödliche Patent is not yet available on HBO Max.
| Directing | Georg Marischka | Director |
| Writing | Michael Gilbert | Writer |
| Crew | Helmut Pigge | Translator |
| Sound | Hans Wunschel | Sound |
| Editing | Ursula Möhrle | Editor |
| Art | Walter Dörfler | Production Design |
| Camera | Rolf Kästel | Director of Photography |
| Sound | Bert Grund | Original Music Composer |
| Production | Karl Heinz Elsner | Production Manager |
| Writing | Michael Gilbert | Novel |
