Armando Lopategui, alias “Carapocha”, un psicólogo experto en asesinos múltiples, se presenta en Valladolid para ayudar al inspector Sancho en sus pesquisas. Augusto ya ha encontrado a la mujer que buscaba: sólo él sabe qué quiere de ella. Por su parte, Sancho tiene que lidiar con dos problemas: un percance que sufre su madre y la difícil relación con Martina, la psicolingüista.
Armando Lopategui, alias "Carapocha", a psychologist who is an expert in multiple murderers, appears in Valladolid to help Inspector Sancho in his investigations. Augusto has already found the woman he was looking for: only he knows what he wants from her. For his part, Sancho has to deal with two problems: a mishap that his mother suffers and the difficult relationship with Martina, the psycho linguist.
