Ive listened to hundreds of post apocalyptic thrillers and this was hands down one of the best. If you like even half of the genre this book is a must read. No one that has listened all the way thru this book series could give it a negative. The end of the world will be dark and gritty. Gruesome and horrible. Ryan captures what it could be like brilliantly. Highly recommend this book series and it’s a great price for nearly 50 hours of listening.