I absolutely LOVED this book! I read Streams of Babel first and couldnt wait to start the sequel. Cora, Scott, Owen & Rain are desperately waiting for a cure after being attacked by bioterrorist just months before. To keep them safe, they are transferred to a twenty-four hour care facility located at a remote mansion. As the book progresses, we find out that the Trinity Four, as they are called, are not as safe as we all think! Meanwhile, Tyler and Shahzad are desperately trying to figure out where ShadowStrike (the bioterrist group) are hiding and where they will strike next. These two teenagers were my favorite! I loved Tylers quick wit and Shahzads sweetness and innocence. The book goes through multiple points of views, just like the first book. I think that kept the flow going really well. This book will keep you on the edge of your seat as you root for the Trinity Four, Tyler and Shahzad to find out where ShadowStrike is. As the reader, you will figure out a few things before the book tells you, and youll be squealing with horror as you realize the danger the characters are putting themselves in. I really enjoyed the realism of this book and how easy it was to care about the characters. A must read for anyone who loves fiction with a bit of truth to it.