As you may have noticed, when you walk into the the Dining Room of the Old Chateau, an Old Man appears on the other side, and walks away. It is completely random if you see him or not, if you don't just keep exiting and reentering the Dining Room until he appears (you can see him more than once). Once you finally see him, pay attention on how he moves: Wait a second, his legs aren't moving! Odd, huh? Is he levitating? He must be a ghost! (There is also a little girl you can see if you enter the bedroom with the red-eyed painting. Of course, she will be in another room, so, of course, you will never get the chance to talk to her.)