In Dunwich, a young vagrant named Bob visits an abandoned house, but flees after seeing a rotting carcass. Across town, Gerry, a psychiatrist, is in consultation with Sandra, a neurotic patient, when Emily Robbins, his 19-year-old girlfriend and personal assistant, arrives. She tells Gerry that she's on her way to meet with Bob, whom she has been trying to help. That evening, Emily finds Bob at a derelict garage exhibiting strange behaviour. The supernatural apparition of Father Thomas then appears as Bob runs away, smothering to death a frightened Emily with a maggot-covered hand. The next morning, Emily's body is found. Emily's father tells the sheriff and Gerry of his suspicions about Bob, due to Bob's previous history of crime. Meanwhile, Peter and Mary leave New York and embark upon their search for the town of Dunwich.