2 Works in Fourteenth Noah/Kanda Yuu
Kanda checks himself into a mental institution... because he can see ghosts. He knows he's going crazy, but the biggest problem is the fact that he can't tell who's living and who's dead. Not to mention there's the white-haired stranger in room 14 who keeps changing the numbers on the rooms...
A look at the end of the Phantom Thief arc from a slightly different point of view.