Courtesy of Smash Attack ReadsHold on to your hats, ladies and gents. Humanity is rearing up for one hell of a bumpy ride!Interest in the book: Rhiannon Frater invited me to be part of the blog tour, and being a major fangirl, I could not say no. After the cover reveal, I was even more excited to read the book. Isn't that cover ridiculously awesome? At first, I thought it was a series, but then she corrected me. I am actually glad it's a standalone. The ending works. It felt right.First Impressions: In true Frater fashion, the prologue sets the scene and grips you tightly by the throat. Humanity is dangling by a thread because the last Bastion has been cut off from its food sources due to the Inferi Scourge breaking through a pretty impenetrable gate. The Bastion sets out on its final mission to save humanity, and as with any zombie book, they don't make it easy on you!Characters: Vanguard Maria Martinez is a bad. ass. mama. jama. She is fierce, protective, loyal, inquisitive and compassionate. She is also broken, physically and mentally, but is not afraid to lay her ass on the line to save the last of mankind. Maria is in love with officer Dwayne Reichardt and their secret love affair is her only form of happiness. Maria was part of the last mission to rid the valley of Inferi Scourge, a mission that ends on a serious sour note. When she is contacted to be part of a secret mission as the final attempt to rid the world of the infected, Maria jumps at the chance to save humanity, even though it may cost her everything. She is such an admirable, courageous woman! She faces fears pretty damn personal throughout the mission but she always keeps her eye on the prize.Dwayne surprised me with his dedication to Maria. He is left back home while Maria is in the field, but with the assistance of Maria's dear friend and tech geek, Lindsay, he is able assist Maria behind the scenes. You see, not all is what it seems in this game. Discovering the truth about everything, along with the characters, is incredible. You feel the intense feelings right along with them, and the deception and surprises will make you gasp!World-Building: Ohhh. The world-building was rich in this book. It's set in the future, and a virus has infected most of the human population, turning them into mindless Inferi Scourge whose sole purpose is to spread the virus by biting their victims. In other words, they do not eat flesh. They merely bite your ass and welcome you to the family. These zombie-like creatures do not decompose, so their human-like appearance plays psychological havoc with the military personnel sent to destroy them.The Last Bastion is the final safe place for humanity, and it is surrounded by millions of Inferi Scourge. The Bastion is slowly dying because the Inferi Scourge has cut them off from all renewable resources and food. The future is bleak, the current living conditions are poor, the ammunition is running low, but the government officials have something up their sleeve. The government's super secret mission is their last hurrah before humanity dies out, and it is full of devious, treacherous, scandalous twists and turns. But as is typical with zombies and viruses, in general, they deliver a set of surprises all their own. Booyah!Speaking of world-building, read Rhiannon's guest post on how she created this world.Lasting Impressions: The ending worked. I was expecting something different, as I am sure others will, but I'm glad Frater decided to surprise us. I finished the book with hope and a smile on my face. And trust me, there is no time for smiles with the Inferi Scourge breathing down your neck! Frater lights up the plot with conspiracies, treachery, coups and a bucket load of political fucktards to last through a nuclear explosion (since, you know, they are like roaches). She also delivers a touching love story that stands strong through a milieu of WTFckery!