This was a very cleverly written thriller which took many unexpected twists and turns. I was drawn in and as a result this book did not take long to read! I enjoyed the modern aspect of a biological weapon, this was very interesting and quite honestly scary to read about! It was written well and I think the structure was great, for example the length of the chapters. This was a very different thriller to the usuals that I read but I really enjoyed it. I would definitely look at reading other books from this author, so I'm looking forward to seeing what else they will publish. I have already recommended this book to a couple of my friends, it challenged me which in my opinion is a definite positive.