Jean Benoît-Lévy & Jean Epstein's inventive documentary about the life of Louis Pasteur, a French chemist and one of the most important figures of medical microbiology, blends biographical drama with scientific recreations of his experiments, using Pasteur's actual instruments.
| Actor | Role |
|---|---|
 Charles MosnierLouis Pasteur | Louis Pasteur |
| RRobert TourneurLe père de Pasteur | Le père de Pasteur |
 Maurice TouzéLouis Pasteur, enfant | Louis Pasteur, enfant |
| JJean RauzenaLe petit Meister | Le petit Meister |
| PPaul JorgeNot listed | Not listed |