Insurgent

The second volume in the Divergent series truly thrilled me. I loved that the other factions (and the factionless) were introduced in this story. My favorite detail was the image of the factionless riding through the city on dark trains . . . and the idea that they'd been doing it all along, Tris had just never noticed. The book was action packed, but Tris's quiet internal struggles over who ally with and her developing empathy for her adversaries really drove the narrative. The first book seemed simplistic; this one was more nuanced and better for it. I loved it!