I've been fighting to finish this book for days. This was not due to it being boring or slow, but rather because having two sick children seems to cut into one's reading time. The Last Oracle was amazing. If you are already a fan of Rollins' Sigma Force books, this one will not disappoint.
What I can tell you of the book without giving too much away: Take the Oracle of Delphi, a secret Romani clan, post WWII Russian scientists with an evil goal, modern radioactivity, autistic children, and a plot to take over the world. Mix them all together, throw in the folks at Sigma and a few civilians. And voila! You have a book that you'll not want to put down.
I have nothing but good things to say about this book. The characters are well developed and interesting, the plot twists enough to keep you guessing. James Rollins is, hands down, one of my absolutely favorite authors. It's truly frightening to think that most of the elements used by Rollins in his books are factual. The crazy-scary things governments have done and condoned. The almost sci-fi weaponry.
If you like what I call History-Mysteries - think Steve Berry and Raymond Khoury (and in my sister's opinion, Clive Cussler) - you'll love Rollins' Sigma Force novels.