With police on hand to investigate the whereabouts of a missing person, existence of the gnome becomes public. Will the lesson of judging a book by its cover intercede before tragedy strikes?

Christmas approaches and all but Marcos, Paula and Miguel pack for home. An unexpected snowstorm sets in, upsetting plans for some while revealing a hero and a traitor.

To prove they're not related and can be together, Iván's cousin, Manuela Portillo, sends him an unexpected item - his own death certificate.

Repeat visits from an owl convince Paula in the gnome's reincarnation, Iván can't believe he killed a man, Fermin fights for his life while losing the paintings, the gang discovers a second door, and Saúl preps a new operative.

The friends mourn Manuel. The prior discovers Elías has broken his vow of chastity and sends him to another monastery. Meanwhile, Elvira tries to share everything she knows and Inés starts putting pieces about her past together. But a new and unexpected death enrages the students, who start a rebellion at the school. Everything is out of control and we’re in for an unexpected ending.

Adéle blames Amaia for the party and she’s accused of tattling. Paul and Amaia take Paz and Eric to see a mysterious painting with crow-men, but they find something terrifying instead. Inés undergoes treatment and takes pills that give her hallucinations. Elías and Elvira feel an increasingly irresistible attraction and Paul and Amaia will discover something about Las Cumbres.

Amaia and Paul manage to find the Crow’s Nest. Meanwhile, Inés wakes up confused in the middle of the woods and when she sees León, she runs in terror. We go back in time to discover the secret behind Inés’ connection to León. Eric suffers another episode of memory loss. Elías notices some strange behaviors, which start to raise his suspicions.

Jacinta returns, but everyone's general happiness remains short-lived under Elsa's rule, and Marcos discovers a worrisome numerical connection between the dead orphans and his sister.

The Las Cumbres prior believes the devil runs rampant in the monastery. Amaia discovers a supernatural tie between her and Inés. Elías feels extremely guilty after what happened with Elvira. Meanwhile, Paul finds something in his cell that makes him suspect the friar. Eric suffers a strange blackout and Paul and Amaia follow a clue to find the Crow’s Nest.

Las Cumbres Boarding School is an impenetrable fortress built on the edge of a cliff where students are subjected to strict discipline and it seems impossible to escape. Two of them manage to run into the woods one night, but things take a turn for the worse because surviving outside the school is even more dangerous than inside and the woods are much more terrifying.