After Rita's death, no one doubts that a serial killer is responsible for the crimes, the same one that is rumored to be a copycat from the Raven's Nest.
The students, increasingly beaten down by the measures inflicted on them by the boarding school, find proof that would prove everything to the police. How can they get it to the outside world from inside this prison?
The incessant struggle to expose all the secrets the boarding school keeps hidden eventually leads the students to an even greater revelation - Who is Inés, really? And what does she have to do with what's happening to them in there?
While continuing their investigation into Inés and León's true identities, an unexpected arrival surprises the students, putting all their plans on hold.
Manuel's return to the boarding school arouses Paul's suspicions. Is his behavior a natural reaction to the traumatic experience he's been through, or is he hiding something?
Frustrated at not being able to report Corax's crimes, the kids react with anger. They'll soon discover that their worst nightmares might just become a reality.