This is my second book by the author, the other being Widdershins which I really enjoyed.
With this, I was a little confused at the beginning. It all seemed a little haywire with the added viewpoint of Gray in the first couple of pages, without actually knowing who he was. I found it confusing anyway, up until they merged into Caleb's body. After that I was interested to see what would happen throughout the rest of the story.
I liked John. He seemed like a really great guy.
The hunt for Caleb's brothers murderer was quite fun reading with Gray being able to scent the demon behind it.
One thing that bothered me was the lack of romance until the last chapter and a half. Okay, they both kept getting turned on when they looked at the other but it was all secretive, not wanting the other to know.
Don't think I will be continuing the series.