La razón de la culpa (English: "The reason for the blame") is a 1943 Mexican film directed by Juan José Ortega who also directed Corazón salvaje. The film stars Blanca de Castejón, Andrés Soler and María Elena Marqués as well as Pedro Infante as Roberto. This was one of Ricardo Montalbán's first films.Pedro Infante was still a novice when he was cast in the role of Roberto, a Spaniard gachupín, but it was his northern accent (Sinaloa) that caused the director Juan José Ortega to make the decision to overdub Infante's voice with that of Jesús Valero, who was from Spain. While it was Valero's speaking voice in the film, it was Infante's voice giving character to the songs he interprets. When the film was broadcast on Netflix Spain however, all the voices were overdubbed so that the accents matched those of the viewers in Spain. The role as Roberto was the only film that Infante appeared in that he portrayed a foreigner.