His first victim knew him best: who the killer is in Las Azules
Apple TV+'s Las Azules — Women in Blue to English-speaking viewers — spent its ten-episode first season in 1971 Mexico City, where the newly formed female police force hunts a serial killer the press calls the Tlalpan Undresser. The show finally puts a face and a name to him in its closing episodes.
Full spoilers ahead. Last chance to turn back.
The killer
The Undresser is Benito — the quiet, charming man who had worked his way into officer Gabina's life as her boyfriend, Chava. While the detectives chased dead ends, he was dating one of the very women investigating him, even suggesting in episode 9 that the two of them burn their work uniforms and start a new life together.
His victims were working women, tied with rope, strangled, and left undressed in public places. He used Article 169 — the legal code restricting women's right to work — as a threat, punishing women for holding jobs.
Why his first victim matters
This is the hinge of the whole mystery. The Azules trace the killings back to a woman named Rosa — the foster mother who took Benito in as a child, and the person who knew him better than anyone. Episode 8 is built around María and Ángeles interviewing her adopted son, still unsure whether the boy Rosa raised could really be the monster they're hunting.
He was. And the roots went deeper: Benito's birth mother, Jacinta, was murdered by his father at a water treatment plant in Azcapotzalco — the spot where a policeman named Morales found Benito as a boy, beside her body.
How it ends
Quickly, and messily:
- Episode 2–3 — the police frame an innocent man, Tito Flores, who takes his own life and is publicly branded the Undresser. The Azules never buy it.
- Episode 9 — a trap is set for Benito, and it goes wrong. He dies, but not before lying about where he's holding the kidnapped Valentina.
- Episode 10 — the Azules crack his logic themselves: he's taken Valentina to the Azcapotzalco plant where his mother died, to finish his story where it started. She's found alive, revived by Gabina's CPR.
What about season 2?
A new case, a new killer. Season 2 premieres on 12 August 2026, running weekly to 30 September, with María — now a lieutenant — chasing a methodical murderer whose victims connect to the 1968 student massacre.
For the record: the convicted murderer who helped María crack the case from his cell in Lecumberri prison gets a finale epilogue of his own — prison law degree, family, and an honorary police officer's title. Only in Las Azules.