“The first year is when some of us lose our lives. The second year is when the rest of us lose our humanity.” —Xaden Riorson Everyone expected Violet Sorrengail to die during her first year at Basgiath War College—Violet included. But Threshing was only the first impossible test meant to weed out the weak-willed, the unworthy, and the unlucky. Now the real training begins, and Violet’s already wondering how she’ll get through. It’s not just that it’s grueling and maliciously brutal, or even that it’s designed to stretch the riders’ capacity for pain beyond endurance. It’s the new vice commandant, who’s made it his personal mission to teach Violet exactly how powerless she is–unless she betrays the man she loves. Although Violet’s body might be weaker and frailer than everyone else’s, she still has her wits—and a will of iron. And leadership is forgetting the most important lesson Basgiath has taught her: Dragon riders make their own rules. But a determination to survive won’t be enough this year. Because Violet knows the real secret hidden for centuries at Basgiath War College—and nothing, not even dragon fire, may be enough to save them in the end.

Only the extraordinary are chosen. Only the cunning survive. An explosive return to the library leaves the six Alexandrians vulnerable to the lethal terms of their recruitment. Old alliances quickly fracture as the initiates take opposing strategies as to how to deal with the deadly bargain they have so far failed to uphold. Those who remain with the archives wrestle with the ethics of their astronomical abilities, while elsewhere, an unlikely pair from the Society cohort partner to influence politics on a global stage. And still the outside world mobilizes to destroy them, while the Caretaker himself, Atlas Blakely, may yet succeed with a plan foreseen to have world-ending stakes. It’s a race to survive as the six Society recruits are faced with the question of what they're willing to betray for limitless power―and who will be destroyed along the way.