Netflix’s ‘Maternal Instinct’ Is Based on a True Story, and the Real Case Is Even More Disturbing Than You Think

When a true-crime documentary lands on Netflix with the kind of premise that sounds almost too dark to be real, viewers tend to go searching for answers. ‘Maternal Instinct’ is one of those films that stops you in your tracks, and the questions it raises about deception, obsession, and tragedy are not fictional at all.

‘Maternal Instinct’ is a true-crime documentary based on a real criminal case that attracted widespread attention due to its shocking circumstances and unexpected twists. The film dives into one of the most harrowing murder cases in recent Texas history, a horrifying fetal abduction case that sent shockwaves across the country.

The Real Case Behind ‘Maternal Instinct’

The case centers on the murder of Reagan Michelle Simmons-Hancock, a crime and fetal abduction that occurred on October 9, 2020, in New Boston, Texas. The perpetrator, Taylor Rene Parker, bludgeoned and killed Simmons-Hancock, who was 35 weeks pregnant at the time, before cutting the unborn baby from the victim’s abdomen.

Parker had previously lied to her then-boyfriend about being pregnant for nine months leading up to the murder, faking her pregnancy to multiple people around her. The deception was far from a spur-of-the-moment lie. Parker faked her own pregnancy for ten months using a silicone belly, forged ultrasounds, and fake gender reveal parties in an effort to keep her boyfriend, Wade Griffin, a local hog trapper, convinced they were expecting a child together.

Parker also falsely claimed to be on the verge of inheriting millions from a wealthy grandmother, promising to buy Griffin a multi-million-dollar ranch in Oklahoma, forging official-looking documents and checks in a misguided attempt to carry out the ruse. The layers of manufactured reality she built around herself went well beyond a simple lie about a pregnancy.

Parker pulled off the pregnancy ruse with the help of a silicone belly and sonogram she had purchased online. She prepared the nursery, took maternity photos, and hosted an elaborate gender reveal party, where a cow with a pink bow around its neck revealed she would be expecting a girl.

Taylor Parker’s Web of Deception

The documentary tells the story of a woman who would do anything to get attention, or be loved, perhaps even trying to convince herself that the lies she was spinning were actually true. That psychological dimension is part of what makes this case so deeply unsettling to follow.

Parker had undergone a hysterectomy following complications from an ectopic pregnancy after a failed tubal ligation, leaving her unable to have more children. Griffin had no knowledge of her previous medical procedures when she announced the pregnancy.

According to Griffin’s own account shared in the documentary, he never caught on to the deception because during that summer their time together was very limited and she never wanted him to see her without clothes, claiming she was insecure because of her stretch marks.

His mother Connie Griffin said her son continues to feel the fallout from Parker’s crimes. She described watching him cry repeatedly, saying that people were so angry at what happened that they would avoid him and turn and walk the other way, and that it never goes away.

The Night of the Crime and What Investigators Found

Parker befriended 21-year-old Reagan Simmons-Hancock of New Boston, Texas. According to Reagan’s husband, Homer Hancock, Parker had taken their engagement and wedding photos. That professional relationship became the entry point into a victim’s life.

On October 9, 2020, Parker went to the home of Simmons-Hancock, a 21-year-old acquaintance in the final months of her pregnancy, and stabbed her more than 100 times. Texas state troopers conducted a traffic stop of a car that morning and found Parker holding a baby in her lap, with the umbilical cord appearing to come out of her pants as if she had given birth to the child. Parker and the baby were taken to a hospital, where staff determined Parker had not given birth to the child.

Responding officers found Simmons-Hancock, who had been 34 weeks pregnant, with a large cut along her abdomen and the baby no longer in her womb. Parker then admitted to being in an altercation with the victim. Authorities determined Parker caused the deaths of both Simmons-Hancock and her baby due to the inability to provide necessary care to the child.

The Trial, the Verdict, and Death Row

Jurors returned with the death sentence after deliberating for just over an hour. The same jury convicted Parker on the charge of capital murder by terror threat or other felony after deliberating for less than an hour. The speed of both decisions reflected just how overwhelmingly the evidence had mounted against her.

Taylor Rene Parker was sentenced to death for the October 9, 2020, killings of Reagan Hancock and her infant daughter, Braxylnn Sage Hancock, by a jury following a weeks-long trial in the fall of 2022. The defense argued during the sentencing phase that Parker had unaddressed mental health issues, but prosecutors maintained she would not change.

In May 2026, the U.S. Supreme Court denied a plea to hear Parker’s case without explanation regarding her death sentence, meaning Parker is still on death row and awaiting information on when her execution might take place.

How the Documentary Brings the Story to Screen

The film is directed by Jessica Dimmock and produced by Joshua Levine, Samantha DeMaria, and Jon Bardin. Dimmock, known for her work on ‘The Texas Killing Fields’ and ‘Unsolved Mysteries’, brings a thoughtful investigative approach to the story, guiding viewers through the twists and revelations of the case.

Netflix confirmed few details about the documentary, including whether Parker was asked to participate. Her ex-boyfriend Griffin appears throughout the trailer, hinting at a new interview.

Reagan’s stepfather, Marcus Brookes, describes her in the film as the best mother he thinks he ever met. Those personal testimonies are what elevate the documentary beyond a simple crime retelling, centering the humanity of the victim in a story that could otherwise get swallowed by the perpetrator’s strangeness.

Netflix describes the film plainly in its own listing, noting that the baby and the blood were not Parker’s. For a platform with a rich catalog of true-crime content, ‘Maternal Instinct’ stands out as one of the most psychologically layered cases it has brought to screen in recent memory. If you’ve already watched the documentary, do you think the film gave Reagan Simmons-Hancock the tribute she deserved, or did Parker’s story end up overshadowing the young mother at the heart of it all?