Five years have passed since we destroyed Kildare.  In the years since, the Urthmen threat has diminished, almost to the point of being bearable.  I began to feel safe for the first time in my life, that my sister is safe, that mankind has a chance to advance, that a future exists.  But I’ve learned that on this planet, nothing lasts, especially peace.  And with the toll of a bell everything changes…

Avery and her companions are faced with a new enemy more deadly than anything they’ve ever encountered, danger so deadly it threatens to destroy everything they’ve worked for and everyone they love.  Will humankind be doomed to extinction once and for all?  Find out in this heart-pumping final installment of the Planet Urth series.