Portrait of a Spore: The 3rd Unhidden Story (Starters #1.5)

PoaS is told from two points of view - one gives us insight into the "mind" of a Spore, bioengineered to wipe out everyone in North America without the vaccine (mostly those from 18-65) leaving only children and teens (Starters) and the elderly (Enders).
The other point of view is Callie's mother. The story covers the morning and afternoon of the spores arrival in Callie's hometown. It fleshes out Callie's backstory and gives us some really great mother/daughter moments.