Nino del Arco as Dieter Smith

Daniel Gélin as Gunther Smith

Yolanda Varela as Mrs. Smith

George Rigaud as Mr. Dalmhan

Karin Block as Karin Dalhman

Harry Wolff as Karin's boyfriend

Inma de Santis as Martha (as Ima de Santis)

Linda Christian as Martha's mother

María Encarnación López as Mrs. buyer

Karin Kloer as Frida

Gundula Burkert as Frida's grandmother

Hugo Blanco as West German guard

Carlos Piñar as East german guard #1

Gérard Tichy as East german guard #2

Manuel González as East German guard #3

Hans Hardt as TV Broadcaster

José Ángel Espinosa 'Ferrusquilla' as Man who jumps the wall