Original: Oscuro deseo
Married Alma spends a fateful weekend away from home that ignites passion, ends in tragedy and leads her to question the truth about those close to her.
A law professor overhears her husband in a suspicious phone conversation, and later visits her recently divorced friend, who drags her to a nightclub.
Alma tries to set boundaries with Darío, and later walks in on a scene that supports her suspicions about Leonardo. Zoe questions her sexual identity.
When forensic evidence suggests Brenda had just met with a lover, the police focus their efforts on identifying him. Darío gets Alma to open up to him.
Alma reveals her lover's name to Esteban, who pays him a visit. Darío finds an upsetting photo in his mom's room. Zoe tries to figure out who Animus is.
At the hotel, Darío spies on the anniversary celebration. Esteban digs deeper into Daríos's background and finds a connection to an old murder case.
Esteban shows Alma a case file. Zoe follows a GPS signal in hopes of finding Animus. Security video footage reveals the last person who visited Brenda.
Flashbacks reveal the start of Lucinda's illness. To test a theory Esteban has, Alma follows his instructions and asks Darío to meet her at a motel.
Alma has second thoughts about leading Darío into Esteban's trap and starts to panic. Meanwhile, Leonardo begins to suspect his wife is cheating on him.
Leonardo orders an exhumation. A flashback reveals the rest that transpired between Esteban and Darío. Zoe receives a surprise visitor at school.
Zoe is taken on a mysterious outing. A clue at Darío's shop leads Alma to a horrifying realization. Esteban's review of the security videos pays off.
Evidence found at the picnic site spurs Leonardo to hunt down Darío. Later, after begging Alma not to air their dirty laundry, he suffers a breakdown.
Esteban asks Vallejo to steal police evidence. Leonardo makes an admission to his brother, and recalls his final meeting with Brenda at her home.
A gruesome find is made. Esteban gets hold of Leonardo's phone records and shows them to Alma. Zoe detects Animus's phone signal and zeros in on it.
The police apprehend a suspect carrying the evidence bag from Brenda's case. Alma demands answers from Darío. Leonardo's medical test results come back.
Lucinda insists she's owed money. García reviews the security videos and gets suspicious. Leonardo reveals what happened the last time he saw Brenda.
The man who stole the evidence related to Brenda's case tells García who hired him. Darío remembers where Esteban held him captive and returns there.
Zoe makes a confession to her mom. On the run, Leonardo calls Esteban for help. García obtains an audio recording from the last phone call Brenda made.
An unexpected encounter answers Alma's lingering questions about the past weeks. García receives forensic results from the textile factory explosion.
