David Robbins Books in Order

A mysterious illness is slowly killing three Warriors, sending another Warrior and four inexperienced trainees into the Valley of Shadow. Finding help requires crossing a toxic, fog-covered region populated by dangerous creatures, then surviving the journey back.

Courtney Hewitt and her companions escape Minneapolis after World War III and head toward a survivalist refuge in northern Minnesota. Traveling with her dog, Gaga, they face zombies, violent strangers, and mutated threats across a countryside offering little safety.

Detective Becca Hunter investigates murders whose suspects cannot remember committing them, even when caught at the scene. Their apparent honesty points to something beyond ordinary excuses, and pursuing the explanation brings further killers out to target her.

Two families leave the East to build new lives in the Rocky Mountains, underestimating the wilderness until something begins hunting them. Mountain man Nate King offers their best hope, but stopping a relentless killer will test even his experience.