I found the first part of the book to be the most boring, and it does take a while for them to jump into the past, but once that happens the intrigue starts to settle in and I found that once there the story had a lot of twists and turns that resulted in an enjoyable ending.
I did like the use of red herrings, I figured out one mystery before the characters, but the larger whodunit eluded me until the main character figured it out.