Insurgent by Veronica Roth

This book is the sequel to Divergent, and I gave it a rating of four out of five. Many of the Dauntless revolt and become allies with the Erudite. Tris and the other Dauntless find refuge with Candor, but it's only temporary. Some of the members of their faction have their minds controlled and actually kill other members. Tris has difficulty knowing who to trust, and her former friends aren't sure about her. The Erudite are trying to locate all of the Divergents, and Tris seems to be at the top of their list. Tobias is reunited with his mother, but Tris isn't sure she can be trusted. She is the leader of the factionless, and they outnumber all of the actual factions. There is a war brewing, but the warriors aren't aware of what's at stake. The Erudite have the knowledge, and they'll do anything to keep it quiet.

This plot is similar to the first book, but I found it harder to follow. There were more characters to remember as members of other factions were introduced. Also, some of the characters were moles within other factions, so that created some issues. Some of the secrets were surprising, in a good way, but there were already many other things going on. The author mentioned a world outside the factions but didn't reveal any information about it until the end of the book. This information was the root of all the conflict.