I FEEL LIKE WE SHOULD DO A THING since I basically stole James' Storybrooke plotline from David's in canon whoops (right down to Lily also being a volunteer at the hospital that he'll be smitten with immediately). Somebody's got amnesia because that's definitely the worst thing that could happen to him right now.

I figure either Mary Margaret since we're very blatantly ripping off things relevant to her in the actual show and he'll be in the hospital at first anyway, or maybe one of your high school kids might know him? He doesn't remember, but he's a senior and the son of one of the teachers (Coach Beiste Lyon), and he's been missing and it's been A Thing.