SECOND QUOTE OF THE DAY: "In a statement, Denver District Attorney John Walsh said his office was obliged to dismiss the case after retaining independent experts whose opinion largely confirmed those of the defense experts and after the Denver medical examiner who conducted Heather’s autopsy in 1998 recently acknowledged a reasonable doubt about Heather’s cause of death. "I want to emphasize that there was no misconduct on the part of the prosecutors or detectives who worked on the case in the late 1990s," he said. "This is simply an example of the criminal justice system being willing and able to reassess a case when necessary."
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PASSAGE OF THE DAY: "Martinez's case is the latest in a number of defendants whose convictions have been overturned over the past 30 years due to evolving scientific understanding on Shaken Baby Syndrome. Per the National Registry of Exonerations, at least 41 parents and caregivers in 18 states convicted based on evidence of SBS, also commonly known as Abusive Head Trauma, have been exonerated since 1989. Last year, New Jersey became the first state in the U.S. to bar expert testimony on SBS/AHT from the courtroom when there is no other evidence of trauma."
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STORY: "Not an easy decision': Denver man sentenced to prison 26 years ago in death of 4-month-old has case dismissed," by Digital Contet Producer Oscar Contreras, published by Denver 7, 0n April 21, 2026. (Oscar A. Contreras is a Murrow-nominated journalist who has been writing for the E.W. Scripps Company since January 2014. Óscar joined Denver7 in July 2015, right toward the end of the James Holmes trial. During his time in Colorado, he has covered the verdict in the Aurora Theater Shooting and its aftermath; the Denver Broncos and their Super Bowl 50 victory; severe weather including snowstorms, tornadoes and wildfires; and local angles on the 2016 presidential election. Being multilingual, Óscar has also covered major international events online such as the Paris terrorist attacks and Mexico’s Hurricane Patricia, the strongest hurricane on record.)
SUB-HEADING: "Stephen Martinez, 58, was sentenced to life in prison in 2000 after he was convicted of first-degree murder in the death of 4-month-old Heather Mares."
DENVER — A Denver man who has been serving a life sentence for almost three decades after being convicted of killing a 4-month-old baby in 1998 had his case dismissed Tuesday following new evidence presented by the Korey Wise Innocence Project that determined the infant died of severe lung disease.
Stephen Martinez, 58, was sentenced in early 2000 to life in prison when prosecutors made the case that 4-month-old Heather Mares died after she was violently shaken by Martinez to stop the child from crying.
Speaking before a judge Tuesday, a family member of the victim said Martinez inflicted a “complex skull fracture” that led to Heather’s death.
Our partners at The Denver Post report that further investigation into Heather’s death showed that the baby had ruptured blood vessels in her eyes, brain bleeding and swelling.
Martinez would later confess to shaking Heather and slamming her into a crib — a confession he later recanted and which his attorneys say was false.
But doctors who recently reviewed Heather’s case found her lungs were severely damaged to the point that “she had almost no air,” according to a petition from the defense reviewed by the Post. Those findings could have caused the symptoms that were previously attributed to abuse, the experts told the defense.
“I understand that today is a difficult day and that decisions made in this courtroom are decisions you’ll have to carry with you the rest of your life,” Denver District Court Judge Andrew Luxen told family members in court Tuesday. “This is not an easy decision,” he reiterated, as he extended his sympathies for the family.
Luxen said the court was guided by Rule 35(c), a criminal procedure that allows a person convicted of a crime to challenge their conviction if they can show their sentence was fundamentally flawed. The judge said Martinez exercised his rights under Rule 35(c) “a number of times” but those prior motions were denied.
The judge went on to say that new evidence discovered in the case “would have likely changed the result” of Martinez’s trial in early 2000, before ordering that his conviction be vacated.
Tuesday’s development in Martinez’s case follows years of extensive investigation and advocacy led by the Korey Wise Innocence Project at the University of Colorado Boulder Law School, his defense said in a news release prior to the announcement.
The project provides free legal services to people serving time in Colorado prisons for crimes they didn’t commit.
"This case is a tragedy on every front. A 4-month-old girl died. A grieving family thought they found justice for their loss, but the system failed them, and it failed Stephen Martinez," said Jeanne Segil, an assistant director at the Korey Wise Innocence Project. "We now know he did not cause the baby's death, yet he lost over 27 years of his life imprisoned for a crime he did not commit."
In a statement, Denver District Attorney John Walsh said his office was obliged to dismiss the case after retaining independent experts whose opinion largely confirmed those of the defense experts and after the Denver medical examiner who conducted Heather’s autopsy in 1998 recently acknowledged a reasonable doubt about Heather’s cause of death.
"I want to emphasize that there was no misconduct on the part of the prosecutors or detectives who worked on the case in the late 1990s," he said. "This is simply an example of the criminal justice system being willing and able to reassess a case when necessary."
“Don’t let this animal out on the street”
Speaking before the court Tuesday, several of Heather’s relatives took to the podium to plead with the judge to not vacate Martinez’s conviction.
Andre Mares, one of Heather’s relatives, told Judge Luxen that releasing Martinez “sends a dangerous message that violence against the most vulnerable can eventually be forgiven.”
Kim Estrada, Heather’s mother, said her life was stopped 27 years ago when she lost Heather and that Martinez has “shown no remorse... about taking our daughter.”
“Your Honor, please, I beg you, don’t let him out; we don’t deserve that. I don’t deserve that,” Estrada said. "From our family to yours — if you have one — please don't let this animal out on the street. He doesn't deserve it, and neither do we."
Martinez's case is the latest in a number of defendants whose convictions have been overturned over the past 30 years due to evolving scientific understanding on Shaken Baby Syndrome.
Per the National Registry of Exonerations, at least 41 parents and caregivers in 18 states convicted based on evidence of SBS, also commonly known as Abusive Head Trauma, have been exonerated since 1989.
Last year, New Jersey became the first state in the U.S. to bar expert testimony on SBS/AHT from the courtroom when there is no other evidence of trauma.
Speaking to Denver7 after the ruling, Andre said Tuesday's decision has weakened the family's belief in the judicial system, especially because prior findings in the case against Martinez showed Heather suffered a skull fracture.
"There are many things that can happen in medical terms, but how does a pneumonia cause a fracture on a baby's head?” asked Andre. "How does Stephen admitting that he hit Heather's head on the crib, how does pneumonia take all that stuff away? It doesn't make sense.”"
The entire story can be read at:
https://www.denver7.com/news/front-range/denver/denver-man-sentenced-to-prison-26-years-ago-in-death-of-4-month-old-has-conviction-erasedPUBLISHER'S NOTE: I am monitoring this case/issue/resource. Keep your eye on the Charles Smith Blog for reports on developments. The Toronto Star, my previous employer for more than twenty incredible years, has put considerable effort into exposing the harm caused by Dr. Charles Smith and his protectors - and into pushing for reform of Ontario's forensic pediatric pathology system. Please send any comments or information on other cases and issues of interest to the readers of this blog to: hlevy15@gmail.com. Harold Levy: Publisher: The Charles Smith Blog.
FINAL WORD: (Applicable to all of our wrongful conviction cases): "Whenever there is a wrongful conviction, it exposes errors in our criminal legal system, and we hope that this case — and lessons from it — can prevent future injustices."Lawyer Radha Natarajan: Executive Director: New England Innocence Project;
FINAL, FINAL WORD: "Since its inception, the Innocence Project has pushed the criminal legal system to confront and correct the laws and policies that cause and contribute to wrongful convictions. They never shied away from the hard cases — the ones involving eyewitness identifications, confessions, and bite marks. Instead, in the course of presenting scientific evidence of innocence, they've exposed the unreliability of evidence that was, for centuries, deemed untouchable." So true!Christina Swarns: Executive Director: The Innocence Project;
