A suicide that looks like a suicide. Delirium in branch A suicide that looks like a suicide. Thus begins this last case, in which Proaza must track down a murderer who uses the art of acting to kill. The veteran Paco Garrido, with his field knowledge, and the forensic Luzón will accompany him in the search. Aurora Marín will try to find the key to the matter that has inspectors Barba and Utrero stuck, with the help of Frida, the Group's new deputy inspector. The trilogy is closed and all the crimes are solved, but what happens with Juanito Proaza? What has changed in your life since you solved your first case three weeks ago? Why have you been detained?