The Immune Books in Order

A devastating virus leaves physician Adam Fisher inexplicably immune, soldier Sarah Wells struggling with a quarantine, and former athlete Freddie Briggs grieving his family. Drawn together after civilization collapses, they pursue an unexpected possibility of hope across an America filled with danger and concealed truths.

Thirteen years after a plague devastates humanity, Will Callahan grows up in a relatively secure Nebraska community amid scarcity and climate disruption. As the only child known to have survived infancy since the pandemic, his existence becomes dangerously important when outsiders come searching for him.

Fifteen years after the pandemic, Rachel Fisher carries vaccine that could allow newborns to survive the virus still threatening humanity's future. Deciding who receives the scarce supply is difficult enough, but a man from her past pursues it for purposes far darker than her own.