In Barcelona, secret agent Antoine Donadieu thwarts the plans of a Nazi scientist.
Jean Marais
Antoine Donadieu
Marisa Mell
Frieda
Gérard Tichy
Matras
Howard Vernon
The 'professor'
Jean Lara
Pelletier
André Cagnard
Gouferolles
Léon Zitrone
Self
José María Caffarel
Police Technician
Carlos Casaravilla
Varosky
Antonio Casas
Colonel
