Charles Van Horn, son of rich and powerful Théo Van Horn, calls upon his former teacher Paul Régis to help him solve the mystery of his recurring bouts of amnesia.
Unfortunately the movie Ten Days' Wonder is not yet available on HBO Max.
| Production | André Génovès | Producer |
| Directing | Claude Chabrol | Director |
| Writing | Manfred Lee | Writer |
| Writing | Frederic Dannay | Writer |
| Writing | Paul Gégauff | Writer |
| Writing | Ellery Queen | Original Story |
| Writing | Paul Gardner | Screenplay |
| Camera | Jean Rabier | Director of Photography |
| Editing | Jacques Gaillard | Editor |
| Writing | Eugene Archer | Screenplay |
| Sound | Pierre Jansen | Music |
| Costume & Make-Up | François-Xavier Leclerc | Makeup Artist |
| Costume & Make-Up | Karl Lagerfeld | Costume Design |
| Art | Guy Littaye | Production Design |
| Costume & Make-Up | Jacky Bouban | Makeup Artist |
| Costume & Make-Up | Jacky Reynal | Makeup Artist |
| Costume & Make-Up | Alaine Scemama | Hairstylist |
| Art | Guy Maugin | Set Decoration |
