The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (2024)

Crime Autopsies

The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (1)

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In the early morning hours of December 9, 2001, authorities were called to the Durham, North Carolina home of Michael and Kathleen Peterson on reports of a fatal accident. As reported by Town & Country, Michael told authorities he and Kathleen spent the prior evening watching a movie, then sitting outside by the pool drinking wine. Michael said he remained outside for some time after Kathleen went inside to go to bed. When he went inside to join his wife, he was horrified to find her lying unconscious at the bottom of a staircase.

When authorities arrived on scene, Kathleen was declared dead. Town & Country reports that a medical examiner, who was present at the scene, made a preliminary determination that Kathleen's apparent fall down the staircase was likely an accident. However, a more thorough examination, which was conducted by a coroner, revealed Kathleen's injuries were far more complex than they initially appeared. At the time of her death, Kathleen Peterson was 48 years old. According to the autopsy report, the coroner found hair in both of Kathleen's hands, which she appeared to have grasped prior to her death. She also had dried blood under her fingernails, on the bottoms of both feet, and on her face. The corner noted Kathleen had multiple abrasions and contusions throughout her face. She also had at least seven lacerations on the back of her scalp, several of which had slightly penetrated her skull. However, there were no actual skull fractures.

She had several medications in her system

The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (2)

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Although Kathleen Peterson did not have any skull fractures, she did have some subarachnoid hemorrhaging on two lobes of her brain. However, according to the autopsy, she did not have any other hemorrhaging or contusions of the brain. The coroner noted Kathleen's neck was fractured near the left thyroid. As stated in the report, Kathleen had multiple contusions to her arms and hands. She also had two pine needles embedded in her hand. An examination of Kathleen Peterson's internal organs did not reveal any abnormalities, with the exception of a small cyst on her right ovary, a small uterine fibroid, and a bulging cervical disc.

Toxicology tests revealed Kathleen's blood alcohol level at the time the autopsy was performed was .07%. It was also concluded that she had diazepam, chlorpheniramine, cyclobenzaprine, and nicotine in her system at the time of her death. The coroner determined Kathleen's cause of death was "severe concussive injury of the brain caused by multiple blunt force impacts of the head." The coroner also noted heavy blood loss may have been a factor. As stated in the autopsy, the coroner determined the fatal injuries were "received as a result of beating."

As he was the only person at the scene, and his account did not match the coroner's conclusion, Town & Countryreports Michael Peterson was indicted for the murder of his wife. However, he vehemently denied any involvement.

It has been suggested Kathleen Peterson was attacked by an owl

The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (3)

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Although the coroner concluded Kathleen Peterson's death was caused by trauma to the head, the injuries were not deep enough to injure her brain. Therefore, as reported by The Wrap, prosecutors concluded Kathleen was struck with a hollow and relatively light fireplace tool called a blow poke. The tool, which was missing from its usual location near the Petersons' fireplace, has two uses. In addition to repositioning logs, it can be used to blow air on a fire to keep it burning. According to The Wrap, the Petersons' blow poke was eventually located, and forensic testing concluded it did not have any traces of blood. However, some people still believe it was the murder weapon.

Another theory, which has been suggested to explain the unusual injuries to Kathleen Peterson's head, is that she was attacked by an owl in the stairwell. As explained by David S. Rudolf, who represented Michael during his trials, the so-called "owl theory" is largely circumstantial. Barred owls, which are known to be aggressive at times, have been seen in the woods near the Peterson home. Rudolf also said wounds on Kathleen's head and face are consistent with a barred owl's beak and talons. In Rudolf's opinion, the theory is "pretty persuasive and credible," although it was never presented in court.

On October 10, 2003, Michael Peterson was found guilty of first-degree murder. He was subsequently sentenced to life in prison without the possibility of parole (per A&E).

Michael Peterson ultimately agreed to an Alford plea

The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (4)

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On September 14, 2011, Town & Country reports thatMichael Peterson was granted a new trial after his defense team proved an expert witness in his initial trial provided misleading testimony. He was ultimately released on $300,000 bond while awaiting his new trial. However, the conditions of his release included remaining on house arrest and being required to wear an ankle monitor. On February 24, 2017, Michael entered an Alford plea, which did not require him to admit guilt. Instead, he simply admitted prosecutors had enough evidence to convict him of the murder charge. Per the condition of the plea agreement, Town & Country Magazine reports Michael was sentenced to time served and was not required to return to prison.

Although Michael is now free, his guilt or innocence in Kathleen's death remains a point of heated controversy. As reported by What to Watch, a similar death, which occurred in 1985, has only further proven Michael's guilt in the minds of those who believe he is a killer. In November 1985, a woman named Elizabeth Ratliff died in what was determined to be an accidental fall down a staircase in Germany. Michael was the last known person to see her alive. Michael's attorney contends it was simply an unfortunate coincidence.

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The Horrific Autopsy Report Of Staircase Murder Victim Kathleen Peterson - Grunge (2024)

FAQs

What are the marks on Kathleen Peterson's head? ›

At least two of the wounds on Kathleen Peterson's scalp are in the shape of the talons of a barred owl, as shown on autopsy photos. The tiny wounds on Kathleen's face are consistent with the tip of an owl's beak. A feather was found on Kathleen Peterson's body.

How many lacerations did Kathleen Peterson have? ›

The medical examiner, Deborah Radisch, concluded that Kathleen had died from lacerations of the scalp caused by a homicidal assault. According to Radisch, the total of seven lacerations to the top and back of Kathleen's head were the result of repeated blows with a light, yet rigid, weapon.

Where was Kathleen Peterson found dead? ›

Michael and Patricia later divorced, and not long after, he moved in with telecoms exec Kathleen Atwater before eventually tying the knot in 1997. In 2001, Kathleen was found unconscious at the bottom of their staircase in Durham, N.C. She was later pronounced dead.

How much did Michael Peterson pay Caitlin? ›

On February 1, 2007 Caitlin Atwater and Michael Peterson settled the wrongful death claim for $25 million, which was finalized on February 1, 2008. 'The Staircase': Did Michael Peterson Kill His Wife Kathleen?

Did Kathleen Peterson have any broken bones? ›

Kathleen Peterson had no fractures or other injuries to her skull. She suffered no injuries that caused damage to her brain, such as a subdural hematoma, nor did she suffer any direct injuries to her brain.

What are the red neurons in Kathleen Peterson's brain? ›

There were red neurons found in Kathleen's brain.

Red neurons indicate that oxygen had failed to reach brain tissues. According to the book, Kathleen had to have been lying dead for at least two hours for the red neurons to develop.

What actually happened to Kathleen? ›

However, Kathleen's autopsy report also made clear that she'd endured severe head-and-neck trauma consistent with being intentionally and furiously beaten by a blunt object, and that she actually died after bleeding out for more than 90 minutes.

Were there feathers in Kathleen Peterson's hair? ›

These were discovered in a clump of Kathleen Peterson's hair that had been pulled from her head and that she was holding in her left hand when she was found. A further re-examination of the evidence found that there were not one, but three microscopic owl feathers discovered on her body.

What is Michael Peterson doing today? ›

Now 80 years old, he lives alone in a ground-floor apartment in Durham, North Carolina, and has since sold the house he shared with Kathleen. He got back to writing and released two books telling his side of the story: 2019's Behind the Staircase and 2020's Beyond the Staircase.

Was Kathleen Peterson cremated? ›

What was Kathleen Peterson's salary? ›

While Michael was a novelist and newspaper columnist of varying success, Kathleen was an executive at communications firm Nortel, earning around $150,000 per year, via NBC News.

What evidence was left out of the staircase? ›

Other significant omissions include Caitlin's testimony on the stand and the fact that Rudolf's wife, Sonya Pfeiffer, was actually a journalist who covered the case. Kathleen's sister Candace Zamperini accused Pfeiffer of misconduct during her testimony — a fact left out of both the documentary and the drama.

Do the Peterson kids still believe their dad? ›

Todd was the first person to see Michael after Kathleen died, as shown in the first episode of HBO Max's new series. Peterson's sons have always stood by their father, who has maintained his innocence for the past twenty years.

Did Kathleen Peterson have life insurance? ›

Authorities also found that Kathleen's insurance was around $1.4 million, which Michael would pocket if the case was called an accident.

Do Margaret and Martha still talk to Michael? ›

Today, Margaret resides in California, and Martha relocated to Colorado. If the footage from the later episodes of Netflix's The Staircase from 2012 and 2016 are anything to go by, they are still close with Michael Peterson.

Why did Kathleen Peterson have a neck brace? ›

In the autumn of 2001, Kathleen's in a neck brace from her disastrous pool plunge; she mixes up the dates of important commitments; she's so distracted by work that she hits a deer with her car. At least Mike appreciates her.

Did Scott Peterson have scratch marks? ›

An evidence technician who examined Scott Peterson's body for scratches or bruises days after his pregnant wife vanished testified Tuesday he found nothing unusual.

How many steps did Kathleen Peterson fall down? ›

The Body At The Bottom Of The Staircase

At 2:40 A.M. on Dec. 9, 2001, Mike Peterson, then 58, called 911 to report that his wife Kathleen, 48, had fallen down a set of “15, 20” steps inside the couple's home. He said he'd been sitting out by the backyard pool and came in to see Kathleen dead.

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