By chance, writer Eddie Ross comes to the aid of a young woman on the street, a good deed that lands him a job with a strange underground character known only as Martínez.

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Main Cast: Eddie Constantine, Elisa Montés, José María Nieto Roa, Silvia Solar, Henri Cogan, Jacinto San Emeterio, Adriano Domínguez, José Villasante, Carmen Porcel, Carlota Bilbao

Director: José Luis Monter

Writers: Niels West-Larsen, Gilles Morris-Dumoulin

Editor: Rosa G. Salgado

Cinematographer: Michel Kelber

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