Que es un fantasma? (2004)

his documentary film, directed by Javier Soto in 2004, focuses on the production history of The Devil's Backbone. It features interviews with Guillermo Del Toro, co-writer Antonio Trashorras, cinematographer Guillermo Navarro, art director Cesar Macarron, unit production manager Esther Garcia, make-up effects designers David Marti and Montse Ribe, and actors Marisa Paredes, Eduardo Noriega, Fernando Tielve, and Federico Luppi, amongst others