Allegiant is a science fiction novel for young adults,[1] written by the American author Veronica Roth and published by HarperCollins in October 2013. It completes the Divergent trilogy that Roth started with her debut novel Divergent in 2011.[1][3][4][5][6][7] The book is written from the perspective of both Beatrice (Tris) and Tobias (Four).[8] Following the revelations of the previous novel, they journey past the city's boundaries to discover what lies beyond.

Insurgent is a 2012 science fiction young adult novel by American novelist Veronica Roth and the second book in the Divergent trilogy.[3] As the sequel to the 2011 bestseller Divergent, it continues the story of Tris Prior and the dystopian post-apocalyptic version of Chicago. Following the events of the previous novel, a war now looms as conflict between the factions and their ideologies grows. While trying to save the people that she loves, Tris faces questions of grief, forgiveness, identity, loyalty, politics, and love