Sunday night at 9 on HLN: Did he fake his own death? Is he the victim of the "Happy Face Killer"? Is there a clue in his father's obituary? The case of missing med student Brian Shaffer is FULL of odd twists, unexpected turns, and tantalizing theories. Maybe YOU can crack this unsolved case on the next #RealLifeNightmare. HLNTV.com | HLN

🔴 **Read Description** Brian Shaffer was a 27-year-old medical student in Columbus, Ohio, when he vanished without a trace on April 1st, 2006. That night, Brian was out bar-hopping with friends to celebrate the start of spring break. Security footage shows him entering the Ugly Tuna Saloona around 1:15 a.m.—but there's no footage of him ever leaving. No back exit. No blind spots. No sightings. It’s as if he vanished into thin air inside a crowded bar. Despite years of investigation, countless l