contains spoilers: identity / nature of hollowface
So what do you think was actually up with hollowface?
was he indeed, as the psychologist suggested, a folie a deux? Perhaps brought on by both father and daughter having vivid imaginations (as exemplified by their writings).
And of course not to forget the fathers rather traumatic(subconscious) experience in his youth seeing the intruder drop to his death. And in case of the daughter brought on by finding the mysterious and ominious note.
Or was it, as the girl suggested, indeed a manifestation come to life of the spirit of the father's father? Which was succesfully put to rest by finally giving him a face (by finally identifying him as his father who came to get him and fell that night).
Any ideas?