The Night Buffalo

El Búfalo de la Noche (English: The Night Buffalo) is a 2007 film directed by Jorge Hernández Aldana and based on the novel by the same name written by Guillermo Arriaga. The film was released in Mexico on August 17, 2007 and in the U.S. on April 14, 2009. The story revolves around a young schizophrenic man, Gregorio (Gabriel González) who commits suicide, affecting the lives of his girlfriend (Liz Gallardo) and best friend (Diego Luna), who were involved in a secret relationship, betraying Gregorio's trust and inevitably becoming affected by guilt when Gregorio kills himself.