The coroner rules the latest death a suicide. Héctor isn’t so sure and decides to investigate. Marta discovers secrets about her husband’s death.

The death of a foreign girl twenty years ago may be related to Ainhoa’s death. Héctor flat out rejects this notion.

New evidence about Ainhoa’s murder that may implicate Juan Rueda surfaces. The second lieutenant offers another version of the story to the police.

Lola, Salva, and Héctor continue their investigation into the elusive Boris. They begin by looking into the pistol used to shoot the sergeant.

DNA evidence is found on Ainhoa’s body and Juan Rueda is detained once again. Héctor urges the judge for more time to investigate the findings.

Rueda barely survives. Lola, Héctor, and Salva arrive and find the murderer. They later manage to uncover the killer's identity.

Someone who was spying on Mar also filmed Ainhoa mere hours before her murder. Salva discovers new information on Agneska’s lover.

Héctor asks to analyze a sample from the crime scene. Fara suffers a terrifyingly similar experience. Marta confesses something to Héctor.

Kaled finds a bloodied youngster on the highway. Héctor finds out that she has an interesting tattoo. The girl manages to utter a name: Vlad.

Marta suffers an accident after activating the fumigation system in the greenhouses. Lucas is detained for having threatened Ainhoa.

Héctor studies the anonymous clues that Fernando received. Sergio finds Agneska and Pablo together.

Héctor searches Francisco’s phone. Fernando has a face to face meeting with Cristina in prison. Investigators discover letters belonging to Fernando.

As was the case with Marta's death, the discovery of Barislav’s body yields no DNA evidence. But clues are later found at Barislav’s house.

Lola and Salva arrive in prison and search for a book with mysterious letters but end up finding nothing. Héctor receives new information.

Héctor investigates and discovers that Cristina was abused by her father when she was young. The police find a notebook full of numbers and charts.

A woman accuses Pilar of having imprisoned her. Vlad faces off against the head of the gang. A big secret is finally revealed.