When a worker is found murdered on the construction side, the investigation swiftly turns from things criminal to the political circumstances surrounding the building itself. Widespread corruption and neglect by the builder himself are seen to have brought the situation about. Much of the movie is filmed using hand-held cameras, and the majority of the dialogue is in the difficult-to-understand and very slangy Spanish dialect of Mexico City's bricklayers.
Ignacio López Tarso
as Don Jesus
Adalberto Martínez
as Patotas
Jaime Fernández
as Perez Gomez
José Alonso
as Federico
Salvador Sánchez
as Chapo Álvarez
Katy Jurado
as Josefina
José Carlos Ruiz
as Jacinto Martínez
David Silva
as Ing. Zamora
Eduardo Cassab
as Munguia
Salvador Garcini
as Sergio García
Gerardo Zepeda
as Marcial
Mario García González
as Delegado
