For tween fans of R.L. Stine and Patrick Carman, this exciting final installment of the Gravediggers series is full of gross-out gore, humor, and "splattery mayhem" ( Kirkus Reviews ). Severed limbs. Rotting flesh. Popping bones. Best friends Ian, Kendra, and PJ have seen it all, and they've spent the last few months risking their lives to rid the world of zombies. Now they face their biggest challenge yet: tracking down the vengeful ex-Gravedigger...