A detective goes undercover and poses as a criminal to try to discover the reasons behind the murder of a night club owner.
| Actor | Role |
|---|---|
| DDennis Neilson-TerryJack Trencham | Jack Trencham |
 Anne GreyHelen Osmond | Helen Osmond |
 Walter FitzgeraldDonald Walpace | Donald Walpace |
 Henri De VriesVan Blond | Van Blond |
 George CurzonBelmont | Belmont |
| FFred PeaseSnowball | Snowball |
 Binnie BarnesGirl | Girl |