Throughout the strange incidents, Kathy observes George's persistent waking up at 3:15 a.m., feeling he must go check on the boathouse. She also has nightmares, in which she is given details about the killings of the home's prior family. Research at the library and county records office suggest that the house is built atop a Shinnecock burial ground and that a known Satanic worshipper named John Ketchum had once lived on the land. She also discovers the news clippings about the DeFeo murders and notices Ronald DeFeo's striking resemblance to George.