Chromosome 21 Season 1 Episode 8 Summary and Ending Explained

We recap the Netflix series Chromosome 21 Season 1 Episode 8 which contains spoilers and explains the ending.

Chromosome 21 begins at a crime scene where a middle-aged factory worker was killed by a gunshot wound to the chest. The only other person present is a young man named Down’s Syndrome Tomy (Sebastian Solorza)– all physical evidence points to Tommy being the shooter. There is blood on his clothes and powder residue on his hands.

the lead investigator, Mariana Enriquez (Valentina Muhr)and her partner Bruno Duran (Mario Horton) have difficulty believing that someone with Down syndrome was capable of such a violent act. Especially since everyone who knows the young man describes him as a kind and gentle soul. Tomy was a beloved member of a foundation for people with Down Syndrome. His girlfriend, Cristina (Pia Urrutia), is the daughter of the foundation owner, Sofia (Claudia Di Girolamo).

Tommy’s brother Guillermo “Got” Ruiz (Gastón Salgado)He has a criminal past and appears to be the most likely shooter. But why should he leave his beloved brother to take the fall? As Mariana continues her investigation, she finds herself trapped in a web of lies and corruption far greater than she could have imagined.

As the series progresses, we learn that Bekam and Mandujano, the victim, were both involved in a jewelry store robbery, and Tomy also helped distract the security guard. The two men fought and Got took all the jewelry.

Who Killed Mandujano?

On the night of the murder, Mandujano kidnaps Tomy to get Bekam to return the stolen goods. A fight ensued and Tomy shot and killed Mandujano. But the owner of the factory Ariel Zavala (Daniel Muñoz), was also present at the scene and Mariana discovered that someone from the police had tampered with the CCTV evidence to keep his name out of the investigation.

With Tomy’s trial not going in his favour, Bekam decides to take his brother and illegally cross the border into Argentina. At the intersection, they are met by Bruno, who appears to have been working for Zavala all along. Bruno shoots and kills Got in cold blood.

Chromosome 21 Season 1 Episode 8 Summary

The finale shows the aftermath of Bekam’s death. Tomy is understandably heartbroken, as is Mariana, who is beginning to suspect Bruno’s corruption. She wants to continue her investigation, but her boss orders her to drop the case. Things are not looking good for Tomy as the judge wants him to go to jail and if he tried to escape he would likely get an even longer sentence.

Is Cristina moving to Spain?

Cristina is also upset that Tomy is back in police custody. Locking herself in her room and refusing to speak to her family leads Sofia to propose a rather drastic measure; She asks her husband for a job transfer across the Atlantic to Spain so that they can finally free their daughter from Tomy and the whole murder drama.

Mariana doesn’t give up on Tomy

Despite receiving a clear command, Mariana is not willing to give up saving Tomy. She calls his public defender and tells him about Zavala’s presence at the crime scene the night of the murder and the tampered evidence. After the attorney confirms the details with Tomy, he asks to see Mariana so they can better plan his defense.

Meanwhile, Mariana tricks Bruno into leaving her alone in his car, giving her enough time to place another recording device. She then interviews the mule who was supposed to help Bemm cross the border, who confirms that someone threatened him and told him not to go to the meeting point. Eventually, Mariana visits Zavala to let him know that she’s after him. While Mariana is there, the factory owner calls his lawyer and clarifies that he has no interest in speaking to her.

The next day, when Mariana tries to tell her boss about the mule’s confession, he suspends her. Her suspension didn’t last long when her recorder caught Bruno incriminating himself and the police chief as Zavala’s associates, leading to the arrest of the three men.

The end of chromosome 21 season 1 explained

At Tomy’s trial, his attorney is asking the judge to drop all charges based on Tomy shooting Mandujano in self-defense. Mariana’s testimony clarifies what really happened that night as she exposed the two corrupt cops who were tampering with evidence.

Why did Tomy shoot Mandujano?

It is revealed that both Mandujano and Zavala started brutally beating him when Got wanted to trade the jewelry for his brother. Fearing for his brother’s life, Tomy took the gun and shot Mandujano dead. He then remained silent about Zavala’s presence, fearing the factory owner would kill his brother. The judge orders Tomy’s actions as self-defense and drops all charges.

The epilogue reveals that Cristina has still moved to Spain with her family, but she keeps in touch with Tomy via FaceTime. Mariana got her daughter back and the two adopted Tomy as part of their family. The series ends with Mariana, Tomy and their daughter enjoying a sunny day at the beach.

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