A serial killer confessed to his cellmate that he had murdered dozens of people because he thought he was Jesus

Hadden Clark was serving a prison sentence for murder when he confessed his sins to his cellmate, a long-haired, bearded man he believed to be Jesus.

His cellmate, Jack Truitt, listened as Clark described in detail how he slit the throat of a young girl in a pink bathing suit, drank her blood and ate some of her flesh before burying her in the woods.

He admitted to Truitt that he knew where he had left the body of six-year-old Michele Dorr – and in 2000 he led police to her remains.

The new documentary series from Investigation Discovery, Born Evil: The Serial Killer and the Saviornow streaming on HBO Max, delves into Clark's tangled past, his unspeakable crimes, and his shocking confessions.

Clark is a serial killer whose name you may not know, but his dark crimes are just as horrific as those of Ted Bundy or Jeffrey Dahmer.

Over the years he confessed to murdering numerous people, although only two victims were confirmed.

Clark murdered Michele on May 31, 1986. Years later, on October 18, 1992, he killed 23-year-old Harvard graduate Laura Houghteling.

But it took years for Clark, a diagnosed paranoid schizophrenic, to make his confession.

Instead, he sent a condolence card to Laura's family, for whom he worked as a gardener. When he was finally caught and interrogated, he insisted that his alter ego, a personality he calls Kristin Bluefin, was responsible for the murders.

The series also delves into Clark's depraved childhood – how he claimed his mother forced him to wear girls' clothes as punishment, how his father killed someone, and how Clark's hobby was killing and dissecting animals. As an adult, he attended the Culinary Institute of America and was caught drinking cow's blood.

It was only the beginning.

The murder of Laura Houghteling

When Laura Houghteling's colleagues reported that she had not shown up for work, her brother noted that the family's gardener, Clark, had avoided conversation all day.

He reported it to the police, who immediately took Clark in for questioning. But Clark provided an alibi for the night she disappeared and burst into tears.

A few days later, he sent a chilling condolence card to Laura's brother and her mother, Penny, a local magazine reported. The Washingtonian in 1994.

“Please just call me when you're ready to start gardening again,” Clark wrote on the card. “And I can also bring you bagels on Friday,” he added, referring to his job at a local bagel shop.

Clark was later identified as a suspect after police found a bloody fingerprint on Laura's pillowcase, which was found in the woods.

He suffocated her with a pillow in her bedroom, stabbed her and later cut off her earlobe to throw away her earring, police said.

In court, he admitted to choking Laura while wearing a wig and Penny's clothes at the time of the murder.

Clark pleaded guilty to first-degree murder and was sentenced to 30 years in prison.

While in prison for Laura's death, he began telling his cellmate confessions about Michele.

The murder of 6-year-old Michele Dorr

Michele Dorr was just six years old when she disappeared from her backyard on May 31, 1986.

She was wearing a pink and white polka dot swimsuit and was last seen walking to an inflatable wading pool, according to her father.

At that time, Clark lived with his brother in Silver Spring, just two houses down from Michele and her father.

But Michele was not found until 2000, after Clark Truitt confessed. Her shallow grave was discovered in a nearby park.

Clark had slit her throat with a knife before drinking some of her blood and eating a piece of her flesh. She was still wearing her pink bathing suit.

“Soulless man” who blamed his actions on his female alter ego

In the late 1990s, now-retired FBI Special Agent Lou Luciano began conducting lengthy interrogations of Clark at the Western Correctional Institute.

Luciano gave interviews for the documentary series and remembered Clark as “pure evil.”

“You’re dealing with multiple personalities, with a guy who eats moldy pork patties,” Luciano said Rolling stone.

“He's a killer. He's a soulless person. There's nothing behind those eyes. And he was the one who held the cards because he had a pretty good idea where the bodies were.”

Luciano said the interview made it clear that Clark has “multiple personalities” – and Kristen Bluefin is one of them.

Clark insisted that Kristen was responsible for the murders.

He signed with Kristen, claiming she was a “mean bitch,” ate “raw” meat, and loved to “hide things.”

“When Hadden started to show that his more energetic and productive personality was this woman, he started to morph more into her in the moment. He switched back and forth… I think Kristen was probably his wall, his shield.”

The killer also drew frightening pictures that contained clues to his alleged crimes.

“His drawings are mostly women and landscapes, maps,” Luciano said. “They look almost like postcards, like 'I wish you were here so I could kill you.' I'm in some of them… But they're always girls with big blue eyes.”

The drawings bear an uncanny resemblance to those of BTK killer Dennis Rader.

During one of the interviews, Luciano asked Clark for a picture of Kristen and he handed him a drawing of a blonde woman with big blue eyes.

Luciano noticed that she resembled FBI Special Agent Desiree Smith. When they called her to help, Clark smiled and said, “You're Kristen.”

Investigators then managed to get further information out of Clark.

The confession

In 2000, with Truitt's help, police were able to narrow their search and give the families some closure.

Truitt spoke about his wild encounters with Clark throughout the documentary series.

He remembered the rancid smell coming from the killer's cell. He had kept 15 cartons of milk in Clark's locker.

“He kept it. It's hot. He just let it swell up. It was just rancid, man,” Truitt said. “I asked him, 'Why did you do that?'”

And he said to me, “It reminds me of decaying bodies.”

Luciano thanked Truitt for helping investigators close the case with Michele's family.

“When Hadden started confessing his actions to Jack because he thought he was Jesus, Jack said, 'Man, this guy is talking about killing, disemboweling and cannibalizing little children and slitting women's throats,'” Luciano said.

“Jack did this at great risk…of being locked up in a reformatory. Calling the police can leave a very bad record on your medical record while you're behind bars. But Jack picked up the phone and made the call.”

Cannibal Brothers

Over the course of the series, Clark's brother, Geoff Clark, sheds light on their childhood and the deficiencies in their upbringing.

Sometimes he cries about his brother's crimes.

A third Clark brother is also a convicted murderer. Bradfield Clark, now 73, was convicted in 1985 of murdering and dismembering a colleague in California. He allegedly ate parts of her body.

In the documentary series, investigators point out that it is rare for two brothers to be involved in completely unrelated murder cases at about the same time.

In the documentary series, her younger brother condemns his siblings and describes the grief he feels for the families of their victims.

During an interview, Clark claimed that he first learned about killing when he witnessed his late father murder a woman.

A murderer who can be released on parole

Warden Michael Bay said he spent countless hours speaking at Clark Prison to gain insight into the mind and psyche of someone the FBI has designated as a “person of interest” in more than 20 states.

It is not known whether Clark killed any more victims – but Bay hopes his series will provide some answers.

“'Born Evil' could potentially open the door to solving many unsolved murder cases,” Bay said.

Clark is currently serving two consecutive 30-year sentences at the Eastern Correctional Institution in Westover, Maryland.

However, the serial killer is now eligible for parole.

“If you don't mind the guy living in your basement or renting a room from you, then release him on parole,” Luciano said.

All five episodes of Born Evil: The Serial Killer and the Savior are now streaming on Max.