EXCLUSIVE: THE DEVIL’S POSTBOX
Inside the sickening ‘Pen Pal’ pact between Gilgo Beach monster Rex Heuermann and America’s most depraved serial killers: The blood-soaked letters that reveal the true face of evil
The hulking, 6-foot-4 monster who turned the dunes of Long Island into a personal graveyard has finally found his only friends in the world. But they aren’t family, and they certainly aren’t neighbors from the quiet suburb of Massapequa Park.
Rex Heuermann, the 62-year-old “Gilgo Beach” serial killer who recently pleaded guilty to the strangulation of eight women, is spending his days in voluntary isolation at the Suffolk County lockup. But while the rest of humanity recoils in horror at his crimes, a dark and depraved network of the country’s most notorious “psychos” is reaching out to welcome him into their demonic brotherhood.
A Brotherhood of Blood
Suffolk County Sheriff Errol Toulon revealed the chilling truth: the man who spent three decades hiding behind the mask of a mundane Manhattan architect is now the recipient of a twisted kind of “fan mail.”
“He was receiving letters from other incarcerated individuals throughout the country — almost like a pen pal,” Sheriff Toulon disclosed.
While prison regulations prevent guards from reading the private contents of the correspondence, the names scrawled on the return addresses tell a story of pure, unadulterated evil. These are not mere letters; they are pacts with the devil, exchanges between inhuman souls that would haunt anyone unfortunate enough to glimpse their contents.
“Happ Face Killer” Keith Jesperson is one of Rex Heuermann’s serial killer pen plans, according to a report.
Among the most prominent names appearing in Heuermann’s mailbox is the infamous “Happy Face Killer,” Keith Jesperson.
The Mentor of Murder
Jesperson, who is currently serving life for the brutal murders of eight women in the early 1990s, hasn’t just been sending “friendly” greetings. He has been acting as a mentor in murder, advising Heuermann on how to navigate the legal aftermath of his blood-soaked legacy.
According to sources, Jesperson urged the hulking architect not to waste time with a high-profile trial that would further expose his sickening depravity.
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The Advice: “I told him that his best way forward was to make a deal to plead guilty,” Jesperson boasted.
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The Motive: To secure a “better place” to spend what remains of his miserable life.
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The Reality: Heuermann took the advice, admitting to a spree of killings dating back to 1993, ending decades of “cold case” agony for the victims’ families.
Oozing Sores and Jailhouse Greed
Inside the Riverhead facility, the “Massapequa Park Schlub” is a shadow of his former self. Sources describe a man who has traded his architectural blueprints for a life of solitary stagnation.
Despite his “oozing” foot problems—reportedly caused by his massive weight and poor circulation—Heuermann spends his time gorging on jailhouse commissary snacks. He has grown increasingly bloated, developing a “massive gut” that he does little to manage beyond a few sluggish laps around the prison yard.
“When Rex comes out of his cell, all inmate movement in this entire facility ceases,” Sheriff Toulon said. He is a pariah even among criminals, a man so loathed that he must be kept in “voluntary isolation” for his own safety.
Rex Heuermann is being held at the Suffolk County jail in Riverhead after pleading guilty to eight cold-case killings.Suffolk County Sheriffs Office
The Eight Souls He Extinguished
While Heuermann seeks solace in the Catholic faith and exchanges “creepy” letters with his fellow maniacs, the world remembers the women he discarded like trash along the Ocean Parkway:
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Maureen Brainard-Barnes
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Melissa Barthelemy
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Megan Waterman
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Amber Lynn Costello
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Jessica Taylor
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Sandra Costilla
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Valerie Mack
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Tracy Lin-Bius
These women, many of whom were struggling sex workers looking for a way out, met a devil in a suit. Heuermann used his “ordinary” appearance to lure them to their dooms, only to strangle the life out of them in a three-decade reign of terror.
The eight women killed by Rex Heuermann on Long Island between 1993 and 2010.
The ‘Fan Mail’ of the Damned
The fact that Heuermann is receiving “fan mail” from killers like Jesperson—who famously tried to recruit University of Idaho suspect Bryan Kohberger to be his cellmate—highlights a sickening subculture within the American penal system.
These serial killers, isolated from a society that rightfully hates them, form dark bonds, trading tips on how to handle the media, the guards, and the crushing weight of their own souls. While Heuermann receives no “love letters” from the public, his connection to the “Happy Face Killer” proves that even in the deepest pits of a maximum-security jail, evil finds its own.
As Rex Heuermann awaits his sentencing in June—where he faces three consecutive life terms—he will have plenty of time to read his letters. But no amount of correspondence with his “notorious psychos” can wash the blood from his hands or hide the true face of the devil that finally stands unmasked.




