His sister was killed in a freak "accident", for which he was blamed. While trying to find what actually happened, Alex Guzmán will uncover the darkest secrets of the Lazcano family, stopping at nothing until everyone is held accountable.
Álex makes his first move on the Lazcano family at Rodolfo's CEO appointment ceremony. Someone identifying as Diana the Huntress offers to help him.
César refuses to tell Elisa what happened to Sara 18 years ago, so she turns to Álex for answers. Chema and Lorenzo start looking for surrogates.
Mariana receives a chilling reminder of the crime in the mail. A flashback reveals Sara knew Chema's secret. Elisa breaks into Álex's house.
Rodolfo pays a visit to Álex and learns a shocking detail about Sara's death. Elisa wants Álex to trust her but first she must pass a test.
The burden of having to keep all the Lazcano secrets starts taking a toll on Elroy. Elisa and Álex attend a masquerade party at the casino.
After César's darker side is brutally exposed at the masquerade, the Lazcano siblings' loyalty begins to shift. Elroy's troubled past is disclosed.
Álex and the Lazcano siblings go to the family estate. César's casino empire starts to crumble as the events at the masquerade go public.
Another suspect in Sara's death comes into play. Chema shares a surprise with his family at a dinner party but a secret exposed steals the spotlight.
Álex and Rodolfo delve into the past to discover the identity of Diana the Huntress. Elisa helps Bruno figure out what happened to Emara.
Flashbacks unravel that fateful day in 2001. Although Sara's diary seems to hold the key to her murder, a secret hidden in a wall tells another story.
The corpse found in the backyard threatens to put Álex back in jail. To prove his innocence, he looks for answers with a psychiatrist who treated Sara.
Lorenzo agrees to be Álex's lawyer. Mariana decides what to do with Elroy. Elisa becomes collateral damage in one of Álex's attacks against César.
Álex's obsession with revenge prompts Elisa to make a choice. Moncho breaks into Chema and Lorenzo's house. Sara learns a shocking truth about herself.
Six months later, Álex discovers the identity of the corpse in his backyard. Meanwhile, César has disappeared and Elisa comes back from Europe.
Álex helps Lorenzo and Chema with the aftermath of what happened at their house. Sergio targets Elisa to hurt César. Nicandro meets up with Marifer.
An officer shows up at Lorenzo's office to inquire about Moncho. Marifer discloses her plan to find her mom to Nicandro. Álex focuses on finding Elisa.
Flashbacks reveal Sara and Marifer's connection. Moncho's brother exacts his revenge. Nicandro hands Álex the ultimate proof of Sara's double life.
A videotape hidden in Sara's closet becomes a key piece of evidence that makes everyone realize they've been seeking the murderer in the wrong place.
While investigating the link between Nicandro and Dr. Alanís, Álex uncovers a key suspect. Rodolfo asks Álex to help him bring his father to justice.
Sara tells Nicandro's dad about his son's drug business. Reinaldo offers Marifer a deal. Álex secures protection for Chema. Nicandro visits Daniela.
Lucía's arrival takes Álex's investigation in another direction. A new lawyer takes Chema's case. César shows up at Álex's house to reclaim his money.
Álex fights for his life in the hospital. A distressed Chema asks his mom for help. A flashback shows how Sara became the focus of Reinaldo's experiment.
Worried about her treatment, Sara attempts to expose Reinaldo. Chema is admitted to the Medusa Center. César reveals crucial information to Álex.
César pays a visit to Tonya and resorts to a drastic method to get information about Sara. Under Reinaldo's watch, Chema undergoes horrifying treatment.
When the truth of what happened to Sara is finally exposed, Álex unleashes one last act of revenge on the Medusa Center.
Complete episode guide for ¿Quién mató a Sara? with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in Japan.
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