[Warning: Potentially Triggering Content] A teenage boy from Long Island has been missing for two weeks, and the details emerging are every parent's worst nightmare. Fifteen-year-old Thomas Medlin (pictured above, via a police handout) vanished after heading into Manhattan on what appeared to be a normal school day, and his family is still desperately searching for answers. According to Suffolk County police, Thomas left Stony Brook School in the tiny Long Island town of St. James back on Friday, January 9, around 3:30 p.m.