Morton house was owned by Freeman Daggett.
Lonely and paranoid, he bought home corpses from the hospital where he
worked and set them up in a macabre birthday celebration in his bomb
shelter. He then committed suicide by overdosing on horse tranquilisers.
After death, each year on February 29, he would capture and kill anyone
in the house to continue his "celebration." This combined with the
spirits of the corpses he stole from the hospital, who remain in the
house as a Death Echo, give Morton House its reputation as the most haunted house in America. Daggett was destroyed by the spirit of Corbett, one of his victims, but the house is presumably still haunted by the Death Echoes.