Martin Crumblish was 17 when he vanished from Dobbs Ferry, New York, on May 3, 1981. That night he attended a party at a clearing known as The View near the Hudson River. After walking a female friend home around 11 p.m., he returned to the gathering but left again at midnight intending to go to a friend’s house on Myrtle Avenue and never arrived.

Martin had been staying in Dobbs Ferry to take SAT exams the next day. His family says he was excited about a new job and left his wallet and personal effects behind, so they do not believe he ran away. No activity has been recorded on his Social Security number since the disappearance.

More than two decades later the case was reclassified as a probable homicide amid suspicions of foul play; authorities have said he may have been involved in a fight and accidentally killed. Multiple searches of the area turned up no remains and the case remains unsolved.

Did anyone who knew Martin or attended that party remember his plans that night or seeing him leave for Myrtle Avenue?