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.

Murray Hamilton
as Wally Sanders

Joyce Taylor
as Soldier

Hugh Marlowe
as John Hull

Khigh Dhiegh
as Kang

Charlie Briggs
as Mike the Chauffeur

Norma Varden
as Miss Pittford

Garth Benton
as Peter Van Hagen

María Cristina Servera
as Argentina

Janet Mary Prance
as Australia

Penny Anne Mills
as Canada