While attending a Swiss school for diplomats' daughters, the teenage daughter of the American ambassador uses her access to various embassies to engage in espionage.
| Actor | Role |
|---|---|
 Murray HamiltonWally Sanders | Wally Sanders |
 Joyce TaylorSoldier | Soldier |
 Hugh MarloweJohn Hull | John Hull |
 Khigh DhieghKang | Kang |
 Charlie BriggsMike the Chauffeur | Mike the Chauffeur |
 Norma VardenMiss Pittford | Miss Pittford |
| GGarth BentonPeter Van Hagen | Peter Van Hagen |
| MMaría Cristina ServeraArgentina | Argentina |
| JJanet Mary PranceAustralia | Australia |
| PPenny Anne MillsCanada | Canada |
 Alexandra BastedoEngland | England |
| AAriane GlaserFrance | France |
| IIlona SchützeGermany | Germany |
| AAnna BajItaly | Italy |
| AAiko SakamotoJapan | Japan |
| GGina TrikonisRussia | Russia |
 Judy PaceLiberia | Liberia |
| LLuz Gloria HerviasMexico | Mexico |
| MMarie-Louise BielkeSweden | Sweden |
| IIgnacia Farias LuqueVenezuela | Venezuela |
 Lynne Sue MoonChina | China |
| KKathy DunnCandace 'Candy' Hull | Candace 'Candy' Hull |
 Emil SitkaLudwig (uncredited) | Ludwig (uncredited) |