When serial killer Simón is captured and brought to a psychiatric prison, he disrupts the warden's Christmas Eve plans. But that's only the beginning.

Ruso and his group attempt to find another way to infiltrate Baruca. The patients start acting up and get suspicious they aren't being told the truth.

With deaths piling up, the guards are forced to unite with the patients to fend off the attackers. Montes questions Hugo's judgment.

Montes and Hugo face off over Simón. Manuela makes a surprising accusation against Espada and begs Cherokee to retaliate on her behalf.

Just as the assailants close in on the Red Block, Hugo makes a last-ditch effort to fight back and save his kidnapped daughter, Laura.