Dialogue with the famous film editor Pedro del Rey del Val about his extensive and prolific career in the film industry. Since his beginnings in the industry as an assistant editor in the late 1940s, Pedro del Rey has been responsible for the editing of some of the most iconic and successful titles in Spanish cinema during the second half of the 20th century. In his more than two hundred films he has worked under the orders of such famous directors as Luis Bunuel, Carlos Saura, Vicente Escriva, Francisco Regueiro, Jaime Chavarri, Julio Diamante or Basilio Martin Patino, among many others. In addition, from 1995 and for twelve years he has been a second and third year Film Editor teacher at the School of Cinematography and Audiovisual of the Community of Madrid (ECAM). An exceptional first-hand journey through the history of our cinema and through one of its most important and, at the same time, unknown to the general public, the cinematographic montage, through the point of view and the experiences lived by one of its main protagonists.