This was a good thriller full of twists and turns. I believe it is part of a series but it is the first one as I have read and it worked fine as a stand alone for the majority of the book. However I do think that reading the previous novels would help believe that the main character could jump to the least believe conclusions so quickly and may make you more invested in him.
Also It seemed to end very quickly after a long build up but other than that I enjoyed it and would recommend to a friend.