Thomas Leeds was hit by a car when he was 20, flipping over its roof, crushing the vehicle and landing on his head. Remarkably, he had few physical signs of trauma, so was released from hospital, before being taken back in later to remove a blood clot on his brain. 

 

On his return home, he found he didn’t recognise home, or the people around him who were apparently his family. In fact, he’d pretty much lost all memory of anything from before the accident. Moreover, he developed face blindness, meaning he is unable to tell people apart from their faces.