A journalist investigates several crimes, one of which involves the well-known riddle of the "closed room".

---

Main Cast: Santiago Gómez Cou, Herminia Franco, Tito Alonso, Floren Delbene, Ilde Pirovano, Agustín Orrequia, Cirilo Etulain, Julia Sandoval, María Esther Buschiazzo, Adolfo Stray

Director: Julio Saraceni

Writer: Ariel Cortazzo

Editor: Oscar Carchano

Cinematographer: José María Beltrán

---

Popular Double Features