The film concerns a police hunt for the criminal known as The Frog.
| Actor | Role |
|---|---|
 Gordon HarkerInspector Elk | Inspector Elk |
 Hartley Power'Chicago Dale' Sandford | 'Chicago Dale' Sandford |
 Rène RayLela Oaks | Lela Oaks |
 Cyril SmithMaggs | Maggs |
| CCharles LefeauxGolly Oaks | Golly Oaks |
 Una O'ConnorMum Oaks | Mum Oaks |
| MMeinhart Maur'Dutchy' Alkmann | 'Dutchy' Alkmann |
 George HayesDandy Lane | Dandy Lane |
 Charles CarsonChief Commissioner | Chief Commissioner |
 Aubrey MallalieuBanker | Banker |