Tomás and Maite's investigations cause their relationship to suffer, and Maite begins to wonder if she is making a mistake by staying so close to him.

Tomás and Maite discover that not everything is what it seems in the cases they investigate. The past of the suspects and the victims make them doubt every step they take.

Maite sees how her investigation seems to stagnate, until something unexpected happens. Someone in her environment could have the key to making an important breakthrough.