If you like Douglas Preston and Lincoln Child books, this was a good book. It's a bit unrealistic, but just what you'd expect from these guys.
I really liked the story. Some of the names were difficult to pronounce and understand. There are a lot of characters, but the author does a good job of reminding you who he's speaking of when he switches characters.
The story is def. out there, but totally interesting. I'm not really a sci-fi person, but this was cool! The audio cd is only 3 hours though, so that was disappointing. I was hoping for more like 5-6 hours, but again totally worth the "read"!
I'm requesting the next audio book in the series if that tells you anything! My understanding is the more current ones are even better.