Cops and a reporter attempt to capture a mysterious killer plaguing the city.

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Main Cast: Paul Naschy, Máximo Valverde, Blanca Estrada, Ramón Centenero, José María Prada, Mirta Miller, Rosa Valenty, Renë D'Grie, María Mahor, Mario Pardo

Director: Ramón Barco

Writers: Paul Naschy, Juan José Daza, Juan José Porto, Ramón Barco

Editor: María Luisa Soriano

Cinematographer: Emilio Foriscot

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