Basically, it was an extremely well-written book and an excellent thriller. The plot was well designed and had you on edge after every page. The characters were really well developed. I especially like the main character who gave you a very good insight into the life of a medic and helped to portray the emotions and fears she faced. The only issue with this book was that it was a tiny bit predictable hence why I have only given it four stars and not five. Despite this, I still thoroughly enjoyed reading this book and would definitely recommend it to others. It isn't your typical thriller book and really dwells into mind manipulation giving you chills and a very disturbing image of murder.