S1, E3: Lieutenant Baín and Sergeant Campos begin to piece together the years when Ana and Lucía were kidnapped. They learn more and more about the kidnapper and slowly get a better understanding of the hell that the girls went through. Lucía's parents, however, especially Joaquín, are not willing to just sit and wait. They don’t hesitate to use Ana to try to hasten the events and find Lucía as soon as possible. But a development leads to a dramatic turn in the course of the investigation and in the life of Sara Campos.