I'm a huge fan of the Elvis Cole series and this along with LA Requiem is the best of the lot. The first 7 books were well written and exciting with good characters but fairly standard detective stories. LA Requiem (No 8) and The Forgotten Man (No 10) showed us what was behind the characters, what made them tick and this has made the series that much better.
If you're a fan already you will love this book, if you've yet to discover Elvis Cole and Joe Pike, start from the beginning of the series and save the best for last, it'll be worth it.