Greg Moyer, 39, was last seen in Feasterville-Trevose, Pennsylvania, on May 12, 2004. He is described as a white male with blond or strawberry blond hair, hazel eyes, between 5 feet 10 inches and 6 feet 2 inches tall, and about 170 to 175 pounds. Three days later, on May 15, he was reported missing to the Lower Southampton Township Police Department.

Very few details about his disappearance have been made public. Officials have not released where he was that day, who he might have been with, or any possible reasons for his disappearance. His case was entered into the National Missing and Unidentified Persons System and remains an open investigation with few publicly known leads.