It is 11:30 am a Monday morning in November 1939. Sheriff Ross Petsby turns his car in to a quiet residential street in Harpers Landing, Texas. Seated in the car with him is Mrs. Blackburn a medical assistant. She becomes increasingly nervous as they approach a sign marking the home of Dr Walter Hemet who has not been seen over the past few days despite his car being in the garage. The sheriff breaks down his door and enters to discover that the doctor has been shot to death.