Lou Luciano has come face to face with “pure evil” – and he hopes he never has to do so again.

“My work has taken me into every hole imaginable in North Africa, East Africa, Iraq, Afghanistan and so on,” the retired FBI special agent told Fox News Digital. “I’ve been around some of the most evil people on the planet. But this guy is the absolute worst. He’s an aberration of humanity. He doesn’t belong here.”

“It’s like sitting next to Satan,” Luciano added.

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Hadden Clark is the subject of a new true crime documentary series: “Born Evil: The Serial Killer and the Savior”. (Investigation and discovery)

Maryland killer Hadden Clark is the subject of a new Michael Bay docuseries on Investigation Discovery (ID) called “Born Evil: The Serial Killer and the Savior,” which examines how the 72-year-old made shocking confessions to his cellmate Jack Truitt, whom he believed to be Jesus, and then sent investigators searching for unsolved cases connected to him.

“Born Evil” is the first true crime documentary series from Hollywood director Michael Bay. (Investigation and discovery)

It includes new interviews with Truitt, Clark’s brother Geoff Clark, relatives of the victims and other people closely connected to the case.

Luciano, who took over the case in the 1990s, spoke in the documentary series. He vividly remembers his encounter with the “Cross-Dressing Cannibal Killer,” as Clark was later called.

Hadden Clark is currently serving two 30-year prison sentences in Maryland. (Investigation and discovery)

“I immediately noticed those ice-blue eyes,” Luciano said. “He’s soulless. You can feel the evil brewing inside this guy. You can immediately sense that he’s a manipulator. The boss said, ‘If he ever gets out, we’ve got to take him down.’ That’s exactly how I felt.”

“When I saw this guy, my immediate reaction was to pull out my gun, put it to his temple and pull the trigger. When you’re in the presence of this guy, it’s just a negative aura of evil. That’s just what emanates from him.”

Hadden Clark, seen here with his father, was diagnosed with paranoid schizophrenia, retired FBI special agent Lou Luciano told Fox News Digital. (Investigation and discovery)

The docuseries revealed how Clark, a diagnosed paranoid schizophrenic, began exhibiting strange behavior as a child. His brother recalled how Clark once hit him with a bicycle and watched as he bled profusely from the head.

Her mother insisted that a botched forceps delivery that caused a head injury was responsible for Clark’s behavior as a child. Doctors believed he had brain damage.

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Hadden Clark had a seemingly idyllic childhood, but behind closed doors things were different. (Investigation and discovery)

As a child, Clark dissected animals and was bullied by other children. His parents, both allegedly alcoholics, fought in front of him and his siblings. He was also caught wearing women’s clothing.

As an adult, Clark attended the Culinary Institute of America but was unable to hold down a job. Horrified co-workers once caught him drinking cow’s blood.

It was only the beginning.

Geoffrey Clark, Hadden Clark’s brother, spoke in the documentary series. (Investigation and discovery)

“Hadden Clark has an incredibly explosive… vindictive temper when he doesn’t get his way,” Luciano explained. “He lashes out when he has a weaker person in his power.”

Michele Dorr was killed in 1986. She was 6 years old. (Investigation and discovery)

On May 31, 1986, Michele Dorr was staying with her father, Carl Dorr, whose house was near Geoff’s house, where Clark was living at the time. She was last seen wearing a pink and white polka dot bathing suit, walking to a backyard pool.

That was the day the six-year-old disappeared. Carl, who was going through an ugly divorce from his ex-wife, was initially considered the main suspect.

The Clark brothers are seen here with their mother. (Investigation and discovery)

Clark later admitted to killing the child and drinking her blood. In 1999, he was found guilty of Dorr’s murder.

The docuseries revealed how Clark told Truitt he knew where Dorr’s body was. In 2000, he led police to the woods where her remains were found.

Over the years, Clark created hundreds of works of art that seemed to depict his crimes.

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Hadden Clark described his heinous crimes to his former cellmate Jack Truitt (pictured here). Clark believed Truitt was Jesus. (Investigation and discovery)

“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.”

Hadden Clark worked as a gardener and handyman for Laura Houghteling’s mother Penny. (Investigation and discovery)

In 1992, Laura Houghteling disappeared from her home. Clark was working as a gardener for the then 23-year-old’s mother.

A bloody fingerprint on the Harvard graduate’s pillowcase pointed to Clark, who led police to her shallow grave in 1993 after pleading guilty to first-degree murder, The Washington Post reported.

The docuseries states that Houghteling’s mother, Penny, was kind to Clark. However, when Penny’s daughter came home from school, his behavior changed.

Laura Houghteling was murdered in 1992. She was 23. (Investigation and discovery)

“Penny begins to give her daughter attention and affection… she is now the center of attention,” Luciano said. “Clark did not take this rejection well at all. His immediate reaction was to freak out… and kill Laura.”

Clark insisted that his alter ego, Kristen Bluefin, was responsible for the murders.

Hadden Clark said his alter ego, Kristen Bluefin, was responsible for the murders. (Investigation and discovery)

“When we interviewed him, sometimes he thought he was Kristen,” Luciano said. “He wore a wig. He had other personalities too… all of his alter egos were women. And at his campsite, he had women’s clothing. He wore women’s clothing. But he loved the attention. He loved when people looked at him.”

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Bradfield Clark has been behind bars since 1985. (Investigation and discovery)

Murder seemed to run in Clark’s family. His brother Bradfield Clark has been behind bars since 1985. He killed his colleague Patricia Mak after inviting her to dinner. He later cooked and ate some of her body parts.

In 1984, Bradfield Clark murdered Patricia “Trish” Mak. (Investigation and discovery)

Luciano thanked Truitt for helping investigators bring closure to grieving families.

“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 mark on your health record while you’re behind bars. But Jack picked up the phone and made the call.”

Jack Truitt is seen here at home with his wife Jackie Truitt. (Investigation and discovery)

“I never heard Jack say, ‘If I help you guys, you’ll help me get out of here, right? I’ve been down here for over 30 years now,'” Luciano continued. “He never asked for anything. He never asked for consideration. He never asked for special favors. And Jack is a tough guy. He was a key decision maker in the system. He was not to be trifled with. Today he’s only an eighth of the man he was. But I have a lot of respect for him.”

A young Jack Truitt after his arrest. (Investigation and discovery)

Luciano said one can never rule out that there are more victims.

“Hadden Clark is a spoiled kid,” he said. “When he doesn’t get what he wants, he doesn’t want attention. Then he gets angry… Hadden is not the kind of guy who does something for free or out of the goodness of his heart. When he wants attention, he does something to get it… Never say never, but I don’t see Hadden Clark as a guy who makes deathbed confessions.”

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It is not known whether Hadden Clark killed any other victims. (Investigation and discovery)

Luciano hopes the documentary series will showcase the tireless work of law enforcement agencies striving to solve unsolved cases, but it will also serve as a warning to women, he says.

Here you can see a friend of Laura Houghteling looking at her parents’ house. (Investigation and discovery)

“Never let your guard down,” Luciano said. “You never know where the next Hadden Clark is lurking just around the corner. Whether he was born with a head-slapping problem, whether he’s just mentally ill, or whether he claims his father did all these things to him, whatever it is, it doesn’t matter to the potential victims out there.”