During an inquest after a woman is killed, the judge suspects his own son. The woman's lover had been friendly with the son and he was also supposed to be married to the judge's daughter.
Is About an investigation on Netflix? Unfortunately the movie About an investigation is not yet available on Netflix.
| Writing | Raoul Ploquin | Dialogue |
| Directing | Henri Chomette | Director |
| Directing | Robert Siodmak | Director |
| Writing | Henri Chomette | Dialogue |
| Writing | Ernst Hesse | Theatre Play |
| Production | Erich Pommer | Producer |
| Writing | Robert Liebmann | Writer |
| Art | Erich Kettelhut | Art Direction |
| Editing | Viktor Gertler | Editor |
| Writing | Max Alsberg | Theatre Play |
| Camera | Konstantin Irmen-Tschet | Director of Photography |
| Camera | Otto Baecker | Director of Photography |
| Sound | Fritz Thiery | Sound |
