Season one of Who Killed Sara? begins with a group of teenage friends having fun on
a day at the lake. There’s Sara Guzman, her brother Alex, her boyfriend Rodolfo Lazcano,
Rodolfo’s brother Chema, and their friend Elroy. While Sara is parasailing,
her harness begins to break. Alex recognizes his sister’s panic and tries to stop the boat,
but a drunken Rodolfo thinks Sara wants to go faster, so he speeds ahead.
Sara’s harness breaks and she plummets into the lake. Despite their best efforts to save her,
Sara is pronounced dead at the hospital. Alex blames Rodolfo for Sara’s death, but is persuaded
by Rodolfo’s rich and powerful father, Cesar Lazcano, to take the blame for the accident.
Alex doesn’t realize that this confession would lead to a 30-year prison sentence.
18 years later, Alex is released from prison and wants revenge on the Lazcano family.
As Alex begins trying to publicly expose Cesar Lazcano, the youngest Lazcano child, Elisa,
begins to question her family’s corruption. She teams up with Alex to uncover the truth
behind the death of Sara, and the two enter into a romantic relationship.
Alex also begins receiving text messages from the mysterious “Diana”, including photos of
a rusted knife that Alex had gifted Chema before Sara’s death. That same knife is then
mysteriously delivered to the Lazcano matriarch, Mariana, who had disposed of it after Sara’s
death. Members of the Lazcano family become the target of many threatening events, leading them to
believe Alex was behind them, although they were actually caused by the mysterious Diana. Rodolfo’s
step-son Bruno is mocked by his classmates after they receive text messages calling the
Lazcano family murderers. While Rodolfo is locked inside a sauna and left to overheat.
There were many suspects amongst the Lazcano family
and their associates for Alex to investigate.
Rodolfo Lazcano was obviously the closest to Sara before her death,
and seemed to truly love her. Before her death, Sara had even told Rodolfo that she was pregnant.
Chema Lazcano is gay, which his family disapproves of, and had been in love with Alex for years.
Chema and his boyfriend, Lorenzo, want to have a baby together, so their friend Clara offers to
be a surrogate. When Clara witnesses Rodolfo’s wife, Sofia, having sex with his father, Cesar,
she informs Chema. Chema tells Rodolfo about Cesar and Sofia’s affair, and when Sofia tells
him that she’s pregnant, Rodolfo knows the baby wasn’t his and ends the relationship.
Elroy was the adopted son of Mariana Lazcano, following the deaths of his father and mother,
whom he blamed himself for. Now, he acted as a loyal employee for whatever the Lazcano family
needed from him. When Elisa arranges for Alex to meet with the Lazcano family’s accountant,
Elroy kills the accountant before he can expose any potential secrets. As
Elroy’s guilt over his involvement with the Lazcano family’s corruption continues to grow,
he attempts to kill himself, resulting in his hospitalization.
And then there’s Cesar Lazcano, the corrupt patriarch. While in prison,
Alex met a fellow inmate who claimed that Cesar killed his daughter, Flor. Cesar owned a casino
with his business associate, Sergio, and secretly ran a brothel in the casino’s basement where they
forced illegal immigrants into sex work. They had a history of violence amongst their prostitutes,
with Sergio even filming himself assaulting some of the women.
Sara had discovered videotapes of these assaults before her death. It’s also revealed
that Cesar had been having an affair with Sara and was the actual father of her baby.
In the season finale, it’s revealed that Sara’s best friend Marifer was the mysterious Diana,
Lorenzo breaks up with Chema due to the Lazcano family’s corruption, Elisa confronts Cesar about
the casino basement and Sara’s death, and it’s revealed that Mariana had asked Elroy to cut
Sara’s harness after discovering her husband’s affair. As the season comes to a close, Alex
discovers an old secret diary of Sara’s in which she writes about struggling with her mental health
and questions her own sanity. This diary leads Alex to an unmarked grave in the backyard of his
childhood home, where he digs up a skull with a bullet hole. We then flashback to Sara in the same
location, struggling with an unknown attacker. We then see Cesar standing over them pointing a gun.
In season two of Who Killed Sara?, Alex continues his investigation into his sister’s death. Elroy
confesses that he never actually got around to sabotaging Sara’s parachute harness as Mariana
had ordered, meaning he wasn’t the killer. And to ensure Elroy wouldn’t tell anyone of his various
crimes at the request of the Lazcanos, Mariana kills him. Alex uses the newly discovered diary
of Sara to uncover more of his sister’s past, leading him to a doctor, Dr. Alanis,
that explains Sara suffered from schizophrenia and had a history of violence and drug abuse.
The condition was genetic, and Alex discovers that he and Sara had different fathers,
with Sara’s real father being a man named Abel, who raped their mother and was later imprisoned.
Alex also learns that Sara had befriended a drug dealer named Nicandro who was one of the
few people aware of her drug problem and mental health struggles. When Abel asks Sara for money
to help him escape his mental hospital, Sara begins selling drugs for Nicandro to make money.
Alex also has to deal with a police investigation,
as he becomes under surveillance while the police look into the body found in his backyard.
Chema’s ex-boyfriend Lorenzo acts as Alex’s lawyer to help exonerate him.
And then there’s all of the drama with the various members of the Lazcano family.
Rodolfo confronts his parents about Cesar’s affairs with both Sara
and Sofia, finally cutting ties with them. Mariana takes in the pregnant Sofia, but
secretly plots to take the baby for herself. After Sofia gives birth, Rodolfo helps Sofia and
her son Bruno escape with the baby, giving them a life free of the Lazcano family corruption.
Chema is still heartbroken over his breakup with Lorenzo,
and becomes entangled in a romance with Clara, who confesses her love for him and a continued desire
to give him a baby. When Clara’s ex-boyfriend, Moncho, tries to violently extort money from her,
Chema kills him. Chema, Clara, and Lorenzo hide Moncho’s body,
but Chema is racked with guilt over the incident. In retaliation, Moncho’s brother murders Lorenzo.
Alex finally exposes Cesar and Sergio’s corruption and human trafficking ring to the media. Cesar
throws Sergio under the bus to take the full fall for their crimes before running off into hiding.
Sergio breaks out of prison and seeks revenge, kidnapping Elisa and holding her hostage.
Cesar goes to Alex and begs for his help in rescuing Elisa before seemingly killing himself
in front of the police. When Alex finds Sergio and Elisa, Cesar returns, alive and well, having faked
his death. Alex and Cesar rescue Elisa, and Cesar kills Sergio before once again going into hiding.
We also finally learn more about Marifer and her relationship with Sara and her grudge against the
Lazcanos. Marifer’s mother, Christina, had been a maid for the Lazcano family,
but had gone missing. Believing the Lazcanos to be responsible, Marifer convinced her sister,
Clara, to manipulate Chema into being his surrogate mother so that they could use
the baby to blackmail Cesar and Mariana into revealing Christina’s whereabouts. It’s also
revealed that Christina had been married to Abel, making Marifer and Sara sisters.
When the mysterious Nicandro shows up in the present, he and Alex uncover
a long lost tape that Sara had recorded before her death. Through that tape,
it’s revealed that Abel had confronted Sara, demanding money from her or else he would
kill her like he did Christina. Sara called Rodolfo for help, but Cesar answered instead.
He came to Sara’s rescue, killing Abel and burying him in the backyard.
After watching the tape, Marifer realizes that Abel killed her mother, not the Lazcanos,
completely wrecking her previous worldview. She had long blamed the Lazcanos for her
mother’s disappearance, and therefore became resentful when her best friend
Sara entered into a relationship with both Rodolfo and Cesar. And so,
it was Marifer who cut Sara’s parachute harness that day on the lake. When Clara and Mariana pay
Marifer a visit, a distraught Marifer tries to shoot Mariana. Clara tries to intervene,
resulting in Marifer accidentally shooting and killing her sister.
As season two comes to a close, Chema turns himself into the police,
confessing to the murder of Moncho and taking the blame for Abel’s death,
clearing Alex’s name as repayment for the horrible things the Lazcanos have put him through.
Elisa burns down her father’s casino, putting a final end to the sex trafficking
ring. As the casino burns, Marifer arrives to confront Elisa and Alex.
She confesses to Sara’s murder and seemingly dies as the building collapses on her.
But that’s not actually the end of this mystery, as we then cut to Nicandro,
looking through patient files of Sara, including one labeled “S.G. Project’s First Patient”. He’s
talking to Sara’s psychiatrist, Dr. Alanis, and tells him “the money is in your account,
just like my father promised.” And then, as the season comes to a close, Nicandro drops the
biggest bombshell of all when he tells the doctor, “Nobody can know that it was really us.”