I received this in exchange for an honest review from NetGalley. Thank you to the author, G.X. Todd, and the publisher, Headline, for this opportunity. 
 Sold as a thriller with an imaginative plot to rival any Stephen King or Clive Barker book, I went into this skeptical that it could fill the big boots it claimed it could. Almost immediately I found that these weren't just false claims. 
 Set in a post-apocalyptic wasteland of our world we meet the individuals that have managed to survive through the last six years of humanity's demise. They have also survived the voices that have descended into individual's minds and plagued them until suicide, murder or madness. One such survivor is sheltered teen, Lacey, and another is the hardened traveler, Pilgrim. An unlikely duo that circumstances see navigating this new world together. 
 Living up to this innovative synopsis was the captivating writing. I was literally hooked on every word and this book threw me from feeling choked with emotion to heaving with disgust and reeling in horror from page to page. 
 Due to this, I struggled to categorize this book after reading it. It is far more than the straight up thriller I was expecting. The unexplained voices add either a science fiction or fantastical element and the aftermath of humanity's descent leads this into the boundaries of horror. The only genre it lacked was romance, which was refreshing after reading a slew of books that sold themselves as firmly one thing but were really romance masked in a thin veil of fantasy or sci-fi! This, however, delivered exactly as promised, and then some! 
 As the first in a four-part series, this has brilliantly set up the coming volumes. This has provided enough to intrigue and captivate and yet not given enough, so that my ocean of unexplained questions will see my biding my time until I can re-enter this world. With over a year until the next installment, I have a long wait ahead of me.