

Barcelona, Spain. A young man is murdered in the middle of the street in front of the police headquarters. Miguel and Marcial, two agents of the Criminal Brigade in charge of the investigation, find in the victim's room a newspaper where a cryptic classified ad appears.
Julio Salvador
Eyewitness

Casimiro Hurtado
Pascual el Mirada

Emilio Fábregas
Police Commissioner

Eugenio Testa
Julián Azores

Marta Grau
Doña Lola

José Goula
Postmaster