This book follows a pretty standard thriller format. Secret agent Pilgrim is on a mission to save the US from infection with the smallpox virus hidden inside flu vaccine by a Saudi born Muslim jihadi. It is an easy read with lots of action. I would have liked more depth. It is written very much like a Hollywood film. There were moments when it did strive to be something more. I liked the idea of the photo of the Jewish woman and her children in the Holocaust which haunted Pilgrim throughout his life. The book is entertaining though slightly hackneyed in places. I think there is potential for the author to write with more authenticity in the future. Worth a look if you are a thriller reader.