We tell ourselves we are our memories. So what happens to a person when all of it vanishes overnight, and they turn up months, or even years, later with no idea who they are? These ten people all did exactly that.

From a reporter who spent twelve years living under a new name in Alaska, to a man found beaten behind a Burger King with no identity at all, to a teacher who disappeared three separate times, we walk through ten of the strangest real cases of amnesia, dissociative fugue, and missing persons ever recorded. Some of these people were genuinely lost inside their own minds. Some may have chosen to disappear. And a few were never fully explained.