The Secret in Their Eyes is a 2009 Argentine-Spanish crime drama film produced, edited, and directed by Juan José Campanella from a screenplay by Campanella and Eduardo Sacheri, and based on Sacheri's 2005 novel La pregunta de sus ojos. It stars Ricardo Darín, Soledad Villamil, Pablo Rago, Javier Godino, and Guillermo Francella. The film focuses on the relationship between judiciaries Benjamín Espósito (Darín) and Irene Hastings (Villamil) and their investigation into a murder case in 1970s Argentina.

Eduardo Alfredo Sacheri is an Argentine writer and professor of History, graduated in the National University of Luján. He is best known for his novel La pregunta de sus ojos which became the basis for the Oscar-winning film El secreto de sus ojos and its American remake. Sacheri co-wrote the film's script in collaboration with its director Juan Jose Campanella. Sacheri and Campanella were also the screenwriters of the animation film Underdogs. He also published a number of short stories, such as Esperándolo a Tito y otros cuentos de fútbol and Lo raro empezó después.