Kiana Strade can dive deeper into blood memories than anyone alive. But instead of devoting her talents to the temple she’s meant to lead, Key wants to do research for the Museum of Human Memory. . . and to avoid the public eye.

Valerian IV's twin swords protect Key from murderous rivals and her own enthusiasm alike. Vale cares about Key as a friend—and maybe more—but most of all, she needs to keep her job so she can support her parents and siblings in the storm-torn south.

But when Key collects a memory that diverges from official history, only Vale sees the fallout. Key’s mentor suspiciously dismisses the finding; her powerful mother demands she stop research altogether. And Key, unusually affected by the memory, begins to lose moments, then minutes, then days.

As Vale becomes increasingly entangled in Key’s obsessive drive for answers, the women uncover a shattering discovery—and a devastating betrayal. Key and Vale can remain complicit, or they can jeopardize everything for the truth.

Either way, Key is becoming consumed by the past in more ways than one, and time is running out.