“H. H. Holmes” on @Wikipedia: “Herman Webster Mudgett (May 16, 1861 – May 7, 1896), better known under the name of Dr. Henry Howard Holmes, was one of the first documented serial killers in the modern sense of the term.[1][2] In Chicago at the time of the 1893 World’s Columbian Exposition, Holmes opened a hotel which he had designed and built for himself specifically with murder in mind, and which was the location of many of his murders. While he confessed to 27 murders, of which nine were confirmed, his actual body count could be as high as 200.[3] He brought an unknown number of his victims to his World’s Fair Hotel from the Columbian Exposition, which was held in Jackson Park some 3 miles (4.8 km) east of the fair.