I picked up Immunity, by Erin Bowman, as soon as I finished the first book in the series, Contagion. The conclusion to this duology offered everything I loved about the first book, plus the addition of a more typical young adult character arc for the main characters.
CAUTION: Spoilers for Contagion ahead!
From Erin’s website:
They thought their nightmare was over, but Thea, Coen, and Nova’s rescue was only the beginning. After being imprisoned on a ship they thought was their ticket to safety, it’s clear that the threat they left behind isn’t as distant as they’d hoped—and this time the entire galaxy is at risk.
Now that threat is about to be unleashed as an act of political warfare. To prevent an interstellar catastrophe, the survivors must harness the evil they faced on the planet Achlys and learn to wield the only weapon they have left: themselves.
I liked that Immunity had a more typical YA character arc – what some might call the “coming of age” arc. Looking at the duology together, I would say the arc was just starting in Contagion before that book ended. Immunity took the characters the rest of the way through the arc.
Immunity is written almost entirely from the point of view of Thea and Coen. The novel also introduces a new teen character, Amber. Removing (mostly) the adult points of view made Immunity feel more like a YA novel. It included more relationship-building and romance than Contagion, again making it feel like a much more typical YA book.
While there were fewer horror elements in Immunity, the tension and suspense of the first book remained. I liked the action scenes and the addition of Amber, to help add complexity to the story.
I really enjoyed this duology. Anyone starting Contagion should make plans to pick up Immunity for the best reading experience.