Pontalba, Canuck
I too have the book. I was lucky enough to be in Dublin, when Stuart Neville did his launch there, at the Gutter Bookshop. There was a dream element to the first two books, with Gerry Fagen's sleep being troubled by visions of the innocent people he had killed (in the Ghosts of Belfast), or of the young woman he is trying to save (in Collusion) but I wouldn't call it spooky.
What many people couldn't take was the violence, but when you take a close look at the writing you see that there is not that much descripion of the violence itself. It's the way Neville builds up to it that has readers shaking.
In the interview he gave in Dublin, Neville said that in this third novel he has not used any paranormal/dream stuff or anything about the Northern Ireland troubles. He set out to write a classical, action-packed thriller. I will get around to reading his third book soon, but I anticipate it will give me the same pleasure I got from the first two.
Cheers,
John