Doesn't Theo go outside and catch snowflakes while the investigator reads the journal?

The one part of the book which was a dead give away for me was the neighbor that was always in everyone's business. Michaelides tries to discredit her, so I figured he was trying to direct attention away from her story.

Did he care for her? No. However, I believe he did this to try and make him the only person Alicia could trust. I don't recall if she picked up on his lack of caring for her, but, it was a form of manipulation to keep her close, so she could continue involving him in her art.

Also, I didn't mind the twist, but hated the idea the implication that it was all going to work out in the end for the villain. I'm not opposed to bad people winning in stories, but with the evidence that is found at the end, it would at least be enough to investigate them. But, the author makes it seem like the villain doesn't have a care in the world about that.

And, I caution you against Michaelides' second book. It was awful, I quit after only a chapter or so.