Insurgent
Soon after reading Divergent, I started the second book in the trilogy, Insurgent. I am about half way through with the book.
This book picks up right where Divergent left off. It begins with Tris, Tobias, Caleb (Tris's brother), Marcus (Tobias's dad) and Peter (one of the Dauntless initiates, whom Tris hates), running away to the Amity headquarters. There, Tris sees a lot of Abnegation members, and old neighbors, like her friend Susan. Since Amity is all about peace, the leaders decide that if Tris and the others want to stay in their faction, there can be no violence between anyone. But they weren't able to keep peace for long, because Peter tried to steal the hard drive that had information about the attack simulation that happened in Divergent. Tris and Peter get into a fight, which violated the agreement between them and Amity. Tris is taken away and given some sort of peace serum which puts her in a better mood. Soon after, Tris sees Erudite cars with Dauntless traitors coming to Amity to find Tris, Tobias, and the others. All the Abnegation disguise themselves as Amity but Tobias gets caught. Tris, Tobias, Susan, and Caleb escape through the cornfields, but they don't know what happened to Peter, Marcus or the rest of Abnegation. They get on a train, but find out they aren't the only passengers. The train is filled with the factionless. The factionless are about to kill them until Tobias tells him that his name is Tobias Eaton. They take them to a woman named Evelyn, who turns out to be Tobias's mother. Tobias is not on good terms with his mother because she left him with his father, Marcus, who abused him in his childhood. Evelyn is the leader of the factionless and we find out that the factionless are twice the size of Dauntless. Evelyn wants to create a government without factions.
The morning after, Evelyn reveals to Tris that her father (who died in the attack simulation and so did her mother) used to be an Erudite and used to be good friends with Jeanine Matthews (creator of the attack serum and leader of Erudite). Then, Tris and Tobias go to the Candor Headquarters to see what's going on there. As soon as they come, they are arrested. They will only be interrogated after going under the truth serum ( Candor are the ones who value honesty). Tris meets her old friend, Christina from Dauntless initiation and she tells her how there are Dauntless living safe in Candor. Christina was also dating Will, who Tris killed during the attack on Abnegation. But neither Christina nor Tobias knows that Tris was responsible for his death. Under the truth serum, Tobias spills all his family secrets and admits that he wanted to leave Dauntless and become factionless but stayed after he met Tris. He also reveals to everyone that he is Divergent.After Tris is injected with the serum, she admits that she is also Divergent and that she killed Will in front of everyone, including Christina and Tobias. Afterward, Uriah, Lynn, and Marlene (who were Dauntless born initiates) make a plan with Tris to go to the Hancock Building to spy on Erudite. But when they arrive, Dauntless traitors and some Erudite came and stormed the whole building, filling the air with some sort of gas and shooting people with a disc (we later find out that it is a new simulation that Jeanine created). They did this because they were looking for more Divergents. Since Tris is divergent she was immune to the simulation and so was her friend Uriah, because he is also divergent. They split up-Tris disguises herself to look like a Dauntless traitor so that she can find the Divergents and help them leave. But as she was helping one of the Divergents escape, she is caught by her ruthless, trainor who was a leader in Dauntless initiation, Eric. Eric gathers all the divergents (there is about 4 or 5 of them) and reveals that he can only take back 2. The rest of them will be killed. Right then, Tris stabs Eric and he is severely hurt. Loyal Dauntless members fight the Dauntless traitors and the traitors run away. Afterward, Jack Kang (leader of Candor) and the rest of the faction debate on what should be done. Tris wants Candor to join with them to fight the traitors and Erudite but Jack wants to set up a meeting with Jeanine Matthews to negotiate. Later, Tris sees Tori, the woman who did her aptitude test, and Zeke, Uriah's brother. They thought that Zeke and Tori were traitors but they were actually spies. And that's about all I've read so far.

