![Post Office Box 1001](https://image.tmdb.org/t/p/original//dtUeYAZAIj3iidV9Eamf010yx2Y.jpg)
![Post Office Box 1001](https://image.tmdb.org/t/p/w200//vBUscsi5LfCpjrQTdchIAk6u41U.jpg)
Post Office Box 1001
1 hour 31 minutes1950-12-05
6.9
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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.
Cast
![Conrado San Martín](https://image.tmdb.org/t/p/w200//m4Oc1WjpBi5oSQ4jVBcykPF6aUk.jpg)
Conrado San Martín
Miguel
![Elena Espejo](https://image.tmdb.org/t/p/w200//xTx0VEeD1xzooUIKC5oIYjvJ2RG.jpg)
Elena Espejo
Carmen
![Tomás Blanco](https://image.tmdb.org/t/p/w200//oXITtURcZk9PpmwPOGA42Cx28zD.jpg)
Tomás Blanco
Antonio
![Manuel de Juan](https://image.tmdb.org/t/p/w200//6e372AYpsIrof8YqE37A2z02q8i.jpg)
Manuel de Juan
Marcial
![Luis Pérez de León](/_next/static/media/notFound.aecd17f8.png)
Luis Pérez de León
Don Rafael
![Carlos Muñoz Arosa](https://image.tmdb.org/t/p/w200//lJcF1vMIp5vKQtp8G9sIysOEo6y.jpg)
Carlos Muñoz Arosa
Rafael
![Guillermo Marín](https://image.tmdb.org/t/p/w200//qkaKf8GZYjHMgFhttGtnhByllop.jpg)
Guillermo Marín
Eyewitness
![Casimiro Hurtado](/_next/static/media/notFound.aecd17f8.png)
Casimiro Hurtado
Pascual el Mirada
![Emilio Fábregas](/_next/static/media/notFound.aecd17f8.png)
Emilio Fábregas
Police Commissioner
![Eugenio Testa](/_next/static/media/notFound.aecd17f8.png)
Eugenio Testa
Julián Azores
![Marta Grau](/_next/static/media/notFound.aecd17f8.png)
Marta Grau
Doña Lola
![José Goula](/_next/static/media/notFound.aecd17f8.png)
José Goula
Postmaster
![Ricardo Fuentes](/_next/static/media/notFound.aecd17f8.png)
Ricardo Fuentes
![Modesto Cid](/_next/static/media/notFound.aecd17f8.png)
Modesto Cid
Photographer
![Rafael Navarro](/_next/static/media/notFound.aecd17f8.png)