This hooked me at first. It was gripping and I had a hard time putting it down. I liked the idea behind it and I think it was executed well. I just wish the ending was different. I don't know if I really liked the ending. It did resolve some stuff, but left a few things undone. I like books to be wrapped up. Plus, I'm not sure what to make of the sci-fi part of it. I'll have to do some thinking on that.
What I liked about this was that while there was something going on with Alison, it wasn't what we thought it was. It trips her up, it complicated her story a bit and it made for an intriguing read. I liked this part of the story above all other parts. I like the stories that get truly inside the characters head. And since Alison had such a rare disorder, it made it all the more easy to show that side of her in the book itself.
I'm not sure if this is going to be a stand alone novel or the first in a series. But I think I like the idea of following the series with Alison with her unusual way of seeing things. But well worth the read.