(3) YA After being kidnapped by human terrorist group Sapience, Donovan (Exo) is back among his fellow exos, humans grafted with impenetrable armor by the extraterrestrial zhree. Now, after one hundred–plus years of peaceful colonization, the zhree are leaving Earth; they'll take select Hardened humans along, and the rest will fend for themselves on the now-vulnerable planet. This sequel continues a nuanced exploration of colonial relations and equality.

Reviewer: Jeannie Coutant

(3) YA More than a century after aliens colonized Earth, seventeen-year-old Donovan is an exo (a human "Hardened" with alien zhree technology) in the "cooperationist" human government. His kidnapping by resistance group Sapience threatens the uneasy truce. The fully realized world is painted in shades of gray; no group has the clear moral ground. Sympathetic characters take opposing sides in this absorbing, unpredictable coming-of-age drama propelled by high-stakes action.

Reviewer: Claire E. Gross