Raymond Gregory Walker, known as Greg, was 57 when he was last seen in Oak Island, North Carolina on November 15, 2008. He is described as a white male, 5 feet 8 inches, 150–180 pounds, with graying, balding hair, brown eyes, a gray beard and mustache, and very poor eyesight that required large, thick-lensed eyeglasses. He split time between Oak Island and a residence in Boston, Massachusetts.

Family and friends became concerned when Greg went silent, and his family reported him missing to the Oak Island Police Department about two months after he was last seen. Investigators entered him into a national missing persons database and contacted former employers. No immediate signs of foul play were reported, and investigators recovered some items and information that suggested the possibility of suicide, but no individual has been found and that theory remains unconfirmed. The case is open but cold, and few details have been made public.

Did anyone in Oak Island or Boston know where Greg worked, socialized, or traveled after November 15, 2008?