The Divergent trilogy is a series of young adult science fiction adventure novels by American novelist Veronica Roth set in a post-apocalyptic dystopian Chicago. The trilogy consists of Divergent (2011), Insurgent (2012) and Allegiant (2013). A related book, Four, presents a series of short stories told from the perspective of one of the trilogy's characters.
 
The society of the trilogy defines its citizens by their social and personality-related affiliation with five different factions, which removes the threat of anyone exercising independent will and threatening the population's safety. Beatrice Prior, who later changes her name to Tris, an Abnegation-born and Dauntless transfer, must figure out her life as a Divergent, while concealing her true nature, and living with the danger of being killed if it is discovered by the Erudite and Dauntless leaders.

The Divergent trilogy:
 
Divergent: One choice can transform you. Veronica Roth's debut is a gripping dystopian tale of electrifying choices, powerful consequences, unexpected romance, and a deeply flawed "perfect society." Includes bonus materials by Veronica Roth.
 
Insurgent: One choice can destroy you. The second bestseller continues the dystopian thrill ride. As war surges in the factions all around her, Tris attempts to save those she loves—and herself—while grappling with haunting questions of grief and forgiveness, identity and loyalty, politics and love. Includes bonus materials by Veronica Roth.
 
Allegiant: One choice will define you. The explosive conclusion to the #1 New York Times bestselling Divergent trilogy reveals the secrets of the dystopian world that has captivated millions of readers. Includes bonus materials by Veronica Roth.