| Actor | Role |
|---|---|
 Lil DagoverHarriet Williams | Harriet Williams |
 Gustaf GründgensJohn James Brown, Privatdetektiv | John James Brown, Privatdetektiv |
 Rolf von GothHarry Williams | Harry Williams |
 Fritz SpiraParker, Polizeichef | Parker, Polizeichef |
 Ernö VerebesReporter Freddy Kallai | Reporter Freddy Kallai |
 Julius FalkensteinNot listed | Not listed |
| EElse RevalNot listed | Not listed |
| CCarl GeppertNot listed | Not listed |
| HHugo DöblinNot listed | Not listed |
 Paul BiensfeldtNot listed | Not listed |
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