Police took the only survivor at the address in for questioning, the property's caretaker William Garretson. Garretson lived in the guest house that was located on the property a short distance from the house. He was questioned and submitted to a polygraph test and stated that Parent had visited him at approximately 11:30 p.m. and left shortly after. He informed police that he had no involvement in the murders and did not know anything that could help the investigation. Police accepted his explanation and he was released.