Brian Randall Shaffer, a 27-year-old medical student at Ohio State University, vanished in Columbus, Ohio after a night out on April 1, 2006. He had dinner with his father, Randy, then met his friend William Clint Florence and others at the Ugly Tuna Saloona in the South Campus Gateway. Security footage shows Shaffer, Florence, and Meredith Reed arriving around 1:15 a.m.; the last clear footage of Shaffer is about 1:55 a.m., when he speaks briefly with two women outside the bar before walking out of frame.

When the bar closed at 2:00 a.m., Florence and Reed could not find Shaffer. His car was later found at his apartment with nothing visibly amiss, and he missed a planned trip to Miami the next day. Surveillance did not capture him leaving the venue; investigators considered whether his exit was obscured, whether he changed his appearance, or whether he used a service exit toward a construction area. Extensive searches of dumpsters, the sewer system, and the Olentangy River produced no sign of him. Florence declined a polygraph; others who were with Shaffer cooperated and passed. The two women later identified near the last footage said they were never asked to take polygraphs.

What did anyone who was on or near the South Campus Gateway that night see or remember about Brian’s movements after 1:55 a.m.?