Javier Navarro, a Falangist, is ordered to infiltrate Republican Madrid to deliver a message to a member of the Fifth Column.
Rafael Rivelles
Fosco Giachetti
Conchita Montes
Juan de Landa
Manolo Morán
Blanca de Silos
Luis López Estrada
Argimiro Guerra
Manuel Miranda
Ángel Marrero
Carlos Muñoz Arosa
Crisanta Blanco
José Martín
Calisto Bertramo