Ainhoa falls victim to a crime in the greenhouses of Campoamargo. Héctor, the new sergeant, discovers compromising information.

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

The neighbors of Campoamargo receive a message about Ainhoa. Lola and Héctor find a suspicious burned vehicle. Lucas is chased.

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

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

Héctor is closing in on clues that will uncover Ainhoa’s murderer. The only witness to the mayor’s daughter’s last moments begins to draw blanks.

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.

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

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

Juan Rueda is detained after a grave is found on his property, but he can’t be charged. The investigation seems to have hit a dead end.

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.

Héctor and his team have another theory about Ainhoa’s murderer’s true identity. Questions about the Romanian child begin to arise.

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

Salva finds Marta’s body and fear once again spreads throughout Campoamargo.

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.

Pablo confronts Héctor over photos linked to the murder. Héctor submits to a polygraph test.

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

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

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.

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

Guineans and Roma encounter each other after mass. Sergio goes to see his brother in prison. Sergio makes mention of an interesting blog.

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

The investigators see the photos and look at the silhouette of what looks like a bike. The investigators identify the model.

Vlad informs the investigators that he has exculpatory evidence in his house. Fernando is threatened in prison.

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.

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