A Secret Service agent seeks his missing brother in Africa, and finds his mission complicated by ivory thieves, a girl with a mysterious past, and a troublesome gorilla.
| Actor | Role |
|---|---|
 Jacqueline LoganDiana Martin | Diana Martin |
 Walter MillerLarry Trent | Larry Trent |
 Richard TuckerChief of the Secret Service | Chief of the Secret Service |
 Boris KarloffScarface Macklin | Scarface Macklin |
 Larry SteersJack Drake | Jack Drake |
 Harry ToddCommodore | Commodore |
 Richard NeillTom Trent | Tom Trent |
 Lafe McKeeTrader John | Trader John |
 J.P. LockneyFather Ricardo | Father Ricardo |
| WWilliam P. BurtMooney | Mooney |
 J. Gordon RussellDerelict | Derelict |
| RRobert FrazierDakka | Dakka |
 Joe BonomoGorilla | Gorilla |