 George CoulourisDr. James Moran | Dr. James Moran |
 Vera DaySally Norton | Sally Norton |
 Peter Forbes-RobertsonJack Venner (as Peter Wayn) | Jack Venner (as Peter Wayn) |
| JJoyce GreggMrs. Margaret Santor | Mrs. Margaret Santor |
| JJimmy VaughnTanga | Tanga |
| MMaxwell FosterInspector Brownlow | Inspector Brownlow |
| EEdward HigginsSgt. Bolton (as Edward Higgings) | Sgt. Bolton (as Edward Higgings) |
 Joy WebsterJudy | Judy |
| RRobert MacKenzieLewis Carling (as Robert Mackenzie) | Lewis Carling (as Robert Mackenzie) |
| NNorman ClaridgeDr. Patterson | Dr. Patterson |
 Marpessa DawnNative Girl | Native Girl |
| SSara LeightonSusan Curtis | Susan Curtis |
| HHarry RossBristow | Bristow |
| AAlexander FieldFair Attendant | Fair Attendant |
| DDavid LawtonMan in Club | Man in Club |
| JJohn A. TinnLascar (as John Tinn) | Lascar (as John Tinn) |
| PPeter LewistonDet. Sgt. Freeman | Det. Sgt. Freeman |
 Roger AvonConstable | Constable |
| SShief AshantiWitch Doctor (uncredited) | Witch Doctor (uncredited) |
 Marie DevereuxProstitute (uncredited) | Prostitute (uncredited) |
| JJohn GrantRescue Party Leader (uncredited) | Rescue Party Leader (uncredited) |
| SSusan NeillOrange-Juice Counter Girl (uncredited) | Orange-Juice Counter Girl (uncredited) |
| SStanley PlattsExplorers Club Steward (uncredited) | Explorers Club Steward (uncredited) |
