I started listening to this book and within the first fifteen minutes questioned if I would be able to go to sleep that night. It's a thriller for sure that starts with two sisters who are listening to the news and hear about a murder/suicide in Russia that is suspicious. Then more reports come out of other people suddenly becoming violent and harming others and then killing themselves. In each case, the killers have seen something before they go crazy. Suddenly the sisters find themselves in a world where people are putting blankets on windows and hiding their eyes in public. Soon society breaks down. Not the best time for a late period either. It all unfolds in a tale of suspense in a world I certainly hope to never live in.