Commissioner Rentero decides to arrest Elena, but when he discovers that they have Chesca and that Lucas, the inspector's son, is alive and in the network, he lets him go. Buendía and Zárate locate a mass grave on the farm with corpses without thumbs; some have been dead for decades. Chesca tries to undermine Lucas by remembering his mother, but Dimas enters and, without saying a word, rips off his thumb. Mariajo explains to Orduño that someone is ratting them out and, due to the area of the call, it could be someone close to him or Zárate. He tries to locate Zárate, but he has gone to get drugs and ends up in the hands of El Capi, who gives him what he is looking for and a cell phone to keep him under control.

The face to face between Lucas and Elena is a reality. Elena tries to make him remember who she is, but Lucas has no mercy. Elena's colleagues try to find her whereabouts.