As Chicago prepared to dazzle the world at the 1893 World’s Fair, a charming young man calling himself H.H. Holmes ran a strange three-story building a few miles away — a drugstore below, a warren of rooms above. Newspapers would later call it the “Murder Castle” and claim it hid trapdoors, gas chambers, and a basement crematorium. Holmes confessed to twenty-seven murders. The truth, as historians have slowly untangled it, is both smaller and stranger than the legend — and still horrifying.

The Charming Swindler

His real name was Herman Webster Mudgett. He had trained in medicine, but his true vocation was fraud: he was a serial bigamist, a forger, and a con man who left a trail of swindles and unpaid debts across the country. In the Englewood neighborhood on Chicago’s South Side, he built the large mixed-use building that would make him infamous, charming creditors and employees alike even as his schemes collapsed around him.

The “Castle”

The building had shops on the ground floor and a maze of rooms above, which Holmes reportedly intended to rent to visitors pouring into the city for the fair. After his arrest, the press transformed it into a purpose-built murder factory — a place of secret chutes, soundproof chambers, and a furnace for disposing of bodies. It made for unforgettable headlines. It also, according to modern historians, was largely invented. The most lurid architectural claims were the product of 1890s “yellow journalism,” newspapers competing to outdo one another with horrors that the actual evidence never supported.

What He Actually Did

Strip away the gothic set dressing and a colder crime remains. Holmes’s confirmed killings grew out of an insurance-fraud scheme involving an associate named Benjamin Pitezel, whom he murdered, along with three of Pitezel’s children, in an attempt to collect on a policy. Holmes eventually confessed to twenty-seven murders — but the confession was unreliable, and several of the people he claimed to have killed were later found alive. Today, historians who have re-examined the records credit him with roughly nine deaths that can be supported with real evidence.

How the Legend Grew

The myth only swelled with time. A 1940 pulp history inflated his victim count toward two hundred, a figure with no basis in fact, and later books — including a hugely popular modern bestseller that paired his story with the building of the fair’s gleaming “White City” — cemented his reputation as America’s first serial killer. The Holmes most people picture today is less a historical person than a character assembled, decade by decade, from sensational journalism and storytelling.

Caught and Hanged

It was the Pitezel insurance scheme, not the “castle,” that finally undid him. A suspicious insurance company and a determined Pinkerton detective tracked Holmes across the country, uncovering the fate of Pitezel and his children. Holmes was convicted of Benjamin Pitezel’s murder and hanged in Philadelphia on May 7, 1896. He went to the gallows still spinning stories about who he was and what he had done.

Why This Case Still Matters

H.H. Holmes is remembered as a monster of architecture — the man with the killing house. But his real significance may be as the first great example of how the media manufactures a monster, layering invention on top of genuine crimes until the two can no longer be separated.

And the documented truth needs no embellishment. A smiling con man murdered his business partner and that man’s children for an insurance payout. Strip away the trapdoors and the secret furnace, and what is left is almost worse: a person who killed, coldly, for money, and a public so hungry for a villain that it built him a castle he never had.

So how much of what we “know” about our most famous killers is real — and how much did we invent because we needed the story to be even more terrible than it was?