A gang of jewel thieves hides out in an abandoned London house after a robbery, unaware that a detective is among them in disguise.
| Actor | Role |
|---|---|
| LLeon M. LionBen | Ben |
 Anne GreyNora | Nora |
 John StuartBarton | Barton |
 Donald CalthropNora's Escort Brant | Nora's Escort Brant |
 Barry JonesHenry Doyle | Henry Doyle |
 Ann CassonRose Ackroyd | Rose Ackroyd |
 Henry CaineMr. Ackroyd | Mr. Ackroyd |
 Garry MarshSheldrake | Sheldrake |
| HHerbert LangleyThe Guard on Train (uncredited) | The Guard on Train (uncredited) |