Premise: Herman Webster Mudgett ( May 16 , 1861 -- May 7 , 1896 ) , better known under the name of Dr. Henry Howard Holmes or more commonly H. H. Holmes , was one of the first documented serial killers in the modern sense of the term . While he confessed to 27 murders , only nine could be plausibly confirmed and several of the murders he confessed to were people who were still alive . Many victims were said to have been killed in a mixed-use building he owned , located about 3 mi west of the 1893 Chicago World 's Fair and said to have been a World 's Fair Hotel , though evidence suggests that the hotel portion was never truly open for business . Besides being a serial killer , Holmes was also a successful con artist and a bigamist , the subject of more than 50 lawsuits in Chicago alone .
Hypothesis: H. H. Holmes killed people.
Label: ENTAILMENT