After The World Ends: Rage - Jamie Thornton

From New York Times and USA Today bestselling author Jamie Thornton.
WHAT IS SANCTUARY HIDING?
Dessa and her friends have brought the children in Project Polus to the safety of Sanctuary's walls-yet not all is what it seems.
Scientists, Security, and Support run a caste-like facility that forces people with the combo cure-people like Dessa's friends-to live outside. But Dessa is desperate for the medical help Sanctuary provides against the zombies. She is determined to make things work.
But when Dessa's group accidentally uncovers some of Sanctuary's top secret experiments, they end up facing a brutal truth, and a whole new kind of zombie.
What once seemed safe might just turn out to be the most dangerous place on the planet.
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AFTER THE WORLD ENDS is a new series in the same bestselling universe as ZOMBIES ARE HUMAN. New characters. New adventures. A thrilling zombie apocalypse awaits.