Why a Cthulhu on the door?
Presumably, same reason why there's what appears to be a H.P. Lovecraft bust on the bookshelves.
Anyway, fantastic adaptation, only wish you'd used better music! Unfortunately the track suffers from slight overuse. Not entirely sure that the long text is a big concern as usually the larger blocks are in areas that can be clicked again to show it.
Enjoyed it quite a bit, very simple but evocative, and (for reasons I won't go into for spoilers) great choice on making it a point and click game. Puzzles were mostly relevant too, besides the strange number lock. Shame about the music though!