Una piedra en el zapato (1956)

Release Date:	1956, September 27
Directors:	Rafael Baledón
Cast:	Roberto Cañedo, Fernando Fernández, Wolf Ruvinskis, Ariadna Welter, Andrés Soler, Guillermo Cramer, Ana Eugenia Martínez

Overview:

Police procedural: some detail pertaining to a murder case is nagging at the back of a detective's mind "like having a stone in his shoe." Once he teases it to the surface, he solves the case.