To be honest I didn't expect this book to be as amazing as the rest of the books in this series. I thought that it ended after the third book and when I found out about A Mad Zombie Party I was a little bit confused. Gena Showalter ended the third book with everything concluded. This book was interesting. It showed more of Frosty and Milla and it revealed some of their pasts and what makes them tick. That part was interesting, but the whole evil company coming back to life thing annoyed me. I also missed all the Ali and Cole moments that filled the first three books. The are my fav couple in this series and they did have some moments but none were in their point of view. Speaking of point of view, I liked how this book was split into Frosty and Milla's point of view. It added something to the story and made me understand these two characters more. Overall the book was okay, but it did have its' great moments.