In the mountains of Madrid, Spain, a railway track on an abandoned bridge and a poem erased from the wall of a ruined building reveal a deliberately silenced story: the system established by Franco's dictatorship after the civil war (1936-39) that allowed hundreds of companies to use thousands of convicted Republicans as slave labor.

• Fernando Colmenarejo
• Álvaro Falquina
• María García Alonso
• Carlos Hernández de Miguel
• Fernando Mendiola
• Anna Miñarro
• Juanjo Olaizola
• Alicia Quintero