The Changeling - Favola di New York

I've read the book so I think I know where this is going.

What I can't understand, 7 episodes in, is how they managed to get the pacing so badly wrong The first three episodes are pretty good. They actually go faster than the book (which has it's own problems with pace and genre hopping transitions) and set out the stall of magic realism/folk horror from the start, but they've stretched the middle part if the story beyond breaking point, adding in backstory which was not in the books and which killed the pace completely.

I will watch the denouement but my fear is that having wasted two episodes (6 & 7) telling us nothing we needed to know, the ending will be rushed, confused or worse still delayed until a second season.