Melodramatic war drama based on a novel by M.A. Bernière, directed by M. Pouctal, conceived as popular propaganda. When it turns out that plant director M. Dalibert has suddenly disappeared, Chantecoq is charged with the investigation. Through creative means he succeeds to unravel the case, involving two German spies looking for a secret recipe for a new French weapon of war.
| Actor | Role |
|---|---|
 Claude MérelleNot listed | Not listed |
 Gaston MichelNot listed | Not listed |
| BBordesNot listed | Not listed |
| JJulien ClémentNot listed | Not listed |
| LLise GautierNot listed | Not listed |
| LLucien LehmannNot listed | Not listed |
| EEdmée PichardNot listed | Not listed |
 Désiré PougaudNot listed | Not listed |
| ÉÉmile RenéNot listed | Not listed |
| SSchefferNot listed | Not listed |
| RRobert ValbertNot listed | Not listed |