12. The Maze of Bones (The 39 Clues #1) by Rick Riordan

Grace Cahill changed her will moments before she died. For Amy and Dan, the loss of Grace, their grandmother, is a terribly sad event. They will miss their weekends spending time at the family mansion hearing stories of Grace’s past adventures and exploring the many rooms.

After the funeral, certain family members are invited to the reading of the will. Amy and Dan are included. Everyone is anxious to find out what their inheritance will be. No one expects what happens. Everyone is given a choice - take one million dollars or give it up for a clue. A clue that will lead to a deep family secret. The one who follows all 39 clues and uncovers the secret will become the most powerful Cahill in the world.

Amy and Dan are 1 of 7 teams competing for the clues. The other teams may be made up of family members, but that doesn’t mean they aren’t dangerous. Everyone wants Amy and Dan out of the way. They think they have inside information since they were Grace’s favorites. The problem is, Amy and Dan know even less than everyone else. They were never told how much influence the Cahill family has had in the world throughout the years. Because of their lack of knowledge and kind natures, Amy and Dan’s lives are put in danger several times as they fly to Paris and search for Clue #2.

11. Allegiant (Divergent #3) by Veronica Roth

The faction-based society that Tris Prior once believed in is shattered—fractured by violence and power struggles and scarred by loss and betrayal. So when offered a chance to explore the world past the limits she’s known, Tris is ready. Perhaps beyond the fence, she and Tobias will find a simple new life together, free from complicated lies, tangled loyalties, and painful memories. 

But Tris’s new reality is even more alarming than the one she left behind. Old discoveries are quickly rendered meaningless. Explosive new truths change the hearts of those she loves. And once again, Tris must battle to comprehend the complexities of human nature—and of herself—while facing impossible choices about courage, allegiance, sacrifice, and love. 

Told from a riveting dual perspective, Allegiant, by #1 New York Times best-selling author Veronica Roth, brings the Divergent series to a powerful conclusion while revealing the secrets of the dystopian world that has captivated millions of readers in Divergent and Insurgent.

10. Insurgent (Divergent #2) by Veronica Roth

One choice can transform you—or it can destroy you. But every choice has consequences, and as unrest surges in the factions all around her, Tris Prior must continue trying to save those she loves—and herself—while grappling with haunting questions of grief and forgiveness, identity and loyalty, politics and love.

Tris's initiation day should have been marked by celebration and victory with her chosen faction; instead, the day ended with unspeakable horrors. War now looms as conflict between the factions and their ideologies grows. And in times of war, sides must be chosen, secrets will emerge, and choices will become even more irrevocable—and even more powerful. Transformed by her own decisions but also by haunting grief and guilt, radical new discoveries, and shifting relationships, Tris must fully embrace her Divergence, even if she does not know what she may lose by doing so.

9. Divergent (Divergent #1) by Veronica Roth

In Beatrice Prior's dystopian Chicago world, society is divided into five factions, each dedicated to the cultivation of a particular virtue--Candor (the honest), Abnegation (the selfless), Dauntless (the brave), Amity (the peaceful), and Erudite (the intelligent). On an appointed day of every year, all sixteen-year-olds must select the faction to which they will devote the rest of their lives. For Beatrice, the decision is between staying with her family and being who she really is--she can't have both. So she makes a choice that surprises everyone, including herself.

During the highly competitive initiation that follows, Beatrice renames herself Tris and struggles alongside her fellow initiates to live out the choice they have made. Together they must undergo extreme physical tests of endurance and intense psychological simulations, some with devastating consequences. As initiation transforms them all, Tris must determine who her friends really are--and where, exactly, a romance with a sometimes fascinating, sometimes exasperating boy fits into the life she's chosen. But Tris also has a secret, one she's kept hidden from everyone because she's been warned it can mean death. And as she discovers unrest and growing conflict that threaten to unravel her seemingly perfect society, Tris also learns that her secret might help her save the ones she loves . . . or it might destroy her.