As per the review title, I have never read a book of this genre before and am so glad I took a chance on it. From the first chapter I wanted to find out more about the characters and the plot. The writing is excellent and believable dialogue in the situation the two main characters are facing - ordinarily I may find such a plot slightly far fetched but the writing style of this book gets you thinking that such a scenario could easily arise, and you find yourself putting yourself in the middle of the situation and considering 'what if?'. The ending was unexpected but brilliant - it is all set up to lead nicely onto a sequel and I will definitely be first in line waiting to buy it. Absolutely great value and highly recommended by a non post-apocalyptic thriller fan!