Alec Hamilton, his wife, Meg, and their children, Penny and Harper, have moved to Radcliffe House, a remote estate that Meg has been hired to renovate. Upon arrival, Donnelly, one of the builders, gives Meg a tour of the premises. When they come to an unusual room with an intricate mosaic on the floor, Donnelly tells Meg that the previous owner, a man named Radcliffe, murdered his wife Isabella in a demonic ritual involving the mosaic. Isabella, it was said, then haunted Radcliffe until, driven mad, he died violently by throwing himself out a window. Rumor has it that both Radcliffe and Isabella now haunt the estate.