Undead Rain Series by Shaun Harbinger

Rain (Undead Rain #1) - Published in 2014, this book introduces us to Alex Harley as he faces the rising dead. The closest Alex has come to the apocalypse is the zombie movie marathon he watches with his girlfriend. But when the dead rise, it’s no longer a movie1.

Storm (Undead Rain #2) - In this installment, Alex ventures into dangerous territory to find his missing brother. The stakes are high, and survival becomes even more challenging 1.

Lightning: Fighting the Living Dead (Undead Rain #3) - Alex embarks on a desperate search to save Lucy. His journey takes him into perilous situations as he battles the living dead 1.

Wildfire: Destruction of the Dead (Undead Rain #4) - Operation: Wildfire involves delivering a batch of vaccine to combat the zombie menace. Alex faces danger and destruction in this thrilling installment 1.

Survival: Revenge of the Living Dead (Undead Rain #5) - Doing the right thing can lead to unexpected consequences. Alex finds himself in a heap of trouble as he tries to survive and protect others 1.

Sanctuary: War Against the Living Dead (Undead Rain #6) - A time to live, a time to die. Alex and a ragtag group fight for survival against the relentless undead 1.