John Martin was 31 when he disappeared from Setauket, New York, on March 7, 1983. He is described as a Caucasian male, 5 feet 7 inches, about 140 pounds, with blond or strawberry-colored hair cut short and blue eyes. When last seen he wore a rust-colored coat, glasses, and hiking boots.

The Suffolk County Police Department opened an investigation, but the case produced few leads and went cold. His file was entered into the National Missing and Unidentified Persons System, but that has not produced a resolution. Family members have continued to seek answers as the years have passed.

If anyone in Setauket or the surrounding area remembers John, his routine, or any small detail from March 1983, please share what you know with the Suffolk County Police Department.