by Veronica Roth
In the story Insurgent, the main characters, Tris and Tobias want to attack the Erudite traitors because they want to take over the city. So, Tris, Tobias, the factionless and part of the Abnegation plan their attack for two days later. On that day, the attackers snooped to the Erudite building and started killing the Erudite. There, they killed Jeanine Matthews, the leader of the Erudite. After that, the Erudite took advantage and got the attackers as prisoners.