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.

Elsa's ignorance of Julia's home life could cost her her career as head mistress. Fermin's inability to hide a serious injury could cost him his life.

Seeking to distance himself and Paula from the menacing school, Marcos readies to sign Héctor off as their guardian, but two investigations lead him to an impasse with no one to trust.

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

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.

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.