This was the first James Rollins book I read, mainly because all the others were checked out at the library.I really wanted to give it 5 starts, but I found myself not used to the way it's written. I didn't really like the four different stories going on, and the book jumps from story to story to story, which can be a little confusing at time. I do like that it's based on a true story...mostly.In the end, I did enjoy the book, and loved the ending.