This book is multi-faceted, chilling, and intensely riveting. The thought of packs of vicious, compact grizzly bears is gut-wrenchingly terrifying, evoking a primal sense of fear. With elements of convoluted human relationships and political corruption woven into the plot, it made a truly engrossing read. The complex characters were quite relatable, and the science behind the creation of these horrifying creatures was intriguing. It would make a phenomenal movie. I had to buy the hardcover to gift.