Contrary to the title Adam isn't a pyscho stalker at all. He was the softest towards Olivia, so there was a contradiction. I've never seen more thoughtful physco than he is. I liked the story, though it wasn't much different from everything I read. Olivia was a fun character, and I liked them together.
I didn't like that they assumed Paul was as bad as Cheslin, so that they could justify their mistake at the end.