The Great Game by Dave Duncan
This is a very good series with an interesting outlook on the origin of religion. I was totally engrossed with the first book and couldn't wait to get my hands on the next two. The second went a little more in depth with the main character and was a fine book also. However the final book wasn't up to par an dragged a little . Overall I felt a little let down with the last book and felt that it unfairly left me hanging.