Fort Lewis: the last bastion of civilization left in the western U.S.

The Undead: nearly seven billion hungry flesh-eaters roaming the world.

Carlie Simmons and her elite team: unstoppable and perhaps humanity’s final hope.

With research for the antidote underway, Carlie and her team at Fort Lewis face a new threat from an emerging force in southeastern Washington. A brutal army of former military prisoners, led by demented Lt. Colonel Ryan Mitchell, seeks to destroy all that Carlie and her fellow operators have fought for. Armed with a frightening technology for manipulating the faster-moving mutants, Mitchell will stop at nothing to control the Pacific Northwest. Amidst the chaos of open warfare at their doorstep, Carlie must face her own personal battles while racing against the clock to save what could be humanity’s last chance for survival and her own chance for love in a world spiraling out of control. The Gathering Darkness is the fourth volume in the Carlie Simmons post-apocalyptic series.