Really, really well done! It might be better if there was an in-game notes feature or if there was a transcript for each phone call maybe. But otherwise, the story really gets spooky once you figure out what's going on... It wasn't too difficult to reach the ending, I only had to check the walkthrough page once just because I was missing one of the final keywords that would blow the case open, but the story itself made up for it. Would recommend!

(P.S. I don't know why, but the second secret listed on the walkthrough page scared me more than the story itself... must have been the anticipation.)