Psychopathic Serial Killer H. H. Holmes abducted, tortured and murdered over 200 women in his "Murder Castle" Hotel.
http://en.wikipedia.org/wiki/H._H._Holmes
The ground floor of the Castle contained Holmes' own relocated drugstore and various shops, while the upper two floors contained his personal office and a maze of over 100 windowless rooms with doorways opening to brick walls, oddly-angled hallways, stairways to nowhere, doors openable only from the outside, and a host of other strange and labyrinthine constructions. Holmes repeatedly changed builders during the construction of the Castle, so only he fully understood the design of the house.[3]
After the completion of the hotel, Holmes selected mostly female victims from among his employees, his lovers and his hotel guests, whom he would later kill.[15] Some were locked in soundproof bedrooms fitted with gas lines that let him asphyxiate them at any time. Other victims were locked in a huge soundproof bank vault near his office, where they were left to suffocate.[8] The victims' bodies were dropped by secret chute to the basement,[3] where some were meticulously dissected, stripped of flesh, crafted into skeleton models, and then sold to medical schools. Holmes also cremated some of the bodies or placed them in lime pits for destruction. Holmes had two giant furnaces as well as pits of acid, bottles of various poisons, and even a stretching rack.[3] Through the connections he had gained in medical school, he sold skeletons and organs with little difficulty.
http://en.wikipedia.org/wiki/H._H._Holmes
