Interpol detective Caesar Smith tracks robbers of the Royal Mint van. He travels to Rio de Janeiro, Rome and Paris and establishes the guilt of a London coffee importer.
| Actor | Role |
|---|---|
 Denis ShawCaesar Smith | Caesar Smith |
 Kay CallardElla | Ella |
 Tony QuinnMercer | Mercer |
 Philip SavilleChase | Chase |
| VVera FusekMara | Mara |
| TTony DoonanWally | Wally |
 Bob SimmonsPeters | Peters |
 Geoffrey HibbertVenner | Venner |
| PPeter ElliottFeenan | Feenan |
 Gordon SterneRobledo | Robledo |
 Carl DueringDelgano | Delgano |
 Guido LorraineLeprave | Leprave |
| JJune RodneyJulie | Julie |
 Hal OsmondFreddie | Freddie |
 Brian WeskeFrancey | Francey |
| CCarl ConwayBart | Bart |
| MMichael BellGarfield | Garfield |
 Jacques CeyWorkman | Workman |
| JJulian OrchardBrady | Brady |
 Robert RaglanSurgeon | Surgeon |
| PPeter AllenbyBank manager | Bank manager |
 Paul StassinoToni | Toni |