Jimmy Ward infiltrates a criminal gang, only to reveal at the last moment that he is, in fact, none other than an undercover Sherlock Holmes.
| Actor | Role |
|---|---|
 Hermann SpeelmansJimmy Ward / Sherlock Holmes | Jimmy Ward / Sherlock Holmes |
 Trude MarlenMaria Iretzkaja | Maria Iretzkaja |
 Elisabeth WendtLola | Lola |
 Edwin JürgensenJ.V. Barnov | J.V. Barnov |
 Theo ShallHarry Morrel | Harry Morrel |
 Ernst KarchowInspektor Brown | Inspektor Brown |
 Werner FinckJohn, Diener bei Ward | John, Diener bei Ward |
 Werner ScharfJack Clark | Jack Clark |
| HHans HaldenJames Hewitt | James Hewitt |
| HHenry LorenzenArchibald Pepperkorn | Archibald Pepperkorn |
 Reinhold BerntWilson | Wilson |
| EEva TinschmannFrau Miller | Frau Miller |
 Ursula HerkingNot listed | Not listed |
| MMaria LojaNot listed | Not listed |
 Charles Willy KayserNot listed | Not listed |