"Zachary Ezra Rawlins is a graduate student in Vermont when he discovers a rare book hidden in the stacks. As he turns the pages, entranced by tales of lovelorn prisoners, key collectors, and nameless acolytes, he reads something strange: a story from his own childhood. Bewildered by this inexplicable book and desperate to make sense of how his own life came to be recorded, Zachary uncovers a series of clues--a bee, a key, and a sword--that lead him...

In a world divided by blood--those with common, Red blood serve the Silver-blooded elite, who are gifted with superhuman abilities--seventeen-year-old Mare, a Red, discovers she has an ability of her own. To cover up this impossibility, the king forces her to play the role of a lost Silver princess and betroths her to one of his own sons. But Mare risks everything and uses her new position to help the Scarlet Guard --a growing Red rebellion--even...

Seventeen-year-old Quinn provides closure to grieving families by taking on the short-term role of a deceased loved one, until huge secrets come to the surface about Quinn's own past.

Working with rebels to bring down The Program, a suicide prevention treatment in which painful memories are erased, Sloane and James consider taking The Treatment to unlock their memories.

Former frontman for the band Narkotika Cole St. Clair returns to California in hopes of renewing his relationship with Isabel Culpeper.

"In search of a better life, Cassia joins a widespread rebellion against Society, where she is tasked with finding a cure to the threat of survival and must choose between Xander and Ky"--

Tris Prior survives the Erudite simulation attacks that occur during the time she expected to be celebrating her achievement of being ranked first among the initiate class of her chosen faction, Dauntless. Even though the Dauntless have been freed from Erudite mind control, a war develops and secrets emerge.

Cassia, having arrived in the Outer Provinces in search of Ky, learns he has escaped from the Society and follows a series of clues he left, which result in rebellion, betrayal, and a surprise visit from Xander.