In the city of Gardner, Massachusetts, stands an imposing old house. Built by chair-manufacturing magnate Sylvester K. Pierce in 1875, the home became the scene for a number of heinous tragedies. The mansion stands empty now -- except for the numerous ghosts that still walk its rooms and corridors. Featured on an episode of the SyFy Channel's "Ghost Hunters," the house has attracted the attention of paranormal investigators nationwide. Join Eric Stanway, author of "Madame Sherri" and "The Old Rindge House," as he takes you inside what could easily be the most haunted house in the Commonwealth.