Antiques dealer Nell West is valuing the contents of her late husband Brad's childhood home, Stilter House. Set on the remote Derbyshire Peaks, there was once a much older property there, in which the notorious Isobel Acton committed a vicious crime. Warned against visiting the house by an elderly aunt of Brad's, Nell hears mysterious piano music soon after her arrival. It becomes clear that the music is tangled with Isobel Acton's macabre fate more than a hundred years earlier. A fate whose consequences still menace the present.