Z-Boat (Book 3): Z-End

Read Z-Boat (Book 3): Z-End Storyline:

Ally Lane must cross the country with a handful of survivors and new additions made along the way. Her goal turns out to be more horrific than anything she's experienced thus far. After a successful escape attempt, Ally heads to the coast in hopes of finding a way out. Instead, she finds out that the depths of human cruelty know no limits.