Michael Lyubomirskiy was 31 when he left his Stoughton, Massachusetts home on the afternoon of March 13, 2015, telling family he was going to the library. He was last seen at about 4:30 p.m., on foot, carrying a backpack with his laptop, wearing a blue jacket, blue jeans and brown sandals, and without his cell phone. He never returned that day.

Investigators later found international travel arrangements that complicate the simple walk to the library. Michael was booked to depart Boston Logan on March 14, 2015, on Turkish Airlines flight 82 to Istanbul, and may have planned to connect from Istanbul to Tel Aviv on flight 792 on March 16. The Stoughton Police opened case 15-562-OF and the disappearance was entered into NamUs as MP30930; Interpol was also notified. He was described as a white male with brown hair and brown eyes, about 5 feet 7 inches to 5 feet 10 inches and 170 to 190 pounds, possibly with a mustache or beard.

The circumstances—an ordinary departure from home, no phone, and booked international flights—remain unexplained and the case is still open. Did anyone in the Boston area or along the March 13 route see Michael or notice someone matching his description that day?