Nothing majorly ‘relevant’ happens in the second episode (and by relevant I mean Ammille of course), well, except the ‘Sprite’ scene, so I will just talk of the major differences from the book and the episode.
Why am I obsessed with these changes?
Well dear Readers, because like I already prayed, I hope that the show changes that original ending because it sucked balls! They don’t have to change who the killer is (even though I wish they would because that is part of the problem) but just change something! That is not how twists work!