Elena and Raphael return for the hauntingly poignant conclusion to New York Times bestselling author Nalini Singh's genre-defining Guild Hunter series.

A thousand years.

It's been a millennium since Elena's fateful first meeting with Archangel Raphael. She has survived war and loss, experienced beauty and cruelty. But no matter what, she has always held on to her mortal heart, as she and Raphael have held on to each other. Passionate and vibrant, they've built a life that has stood the test of time, growing ever stronger with each turn of the sun.

But change is coming--of a magnitude they could have never imagined--and it will forever alter the trajectory of their existence.

Even as they grapple with the cataclysmic shift in their personal lives, the Cadre of Ten, which has maintained a hard-won peace for centuries, begins to simmer with dangerous fault lines. The specter of madness looms in one archangel, the promise of war burns between two others, and in darkness far from mortal and immortal eyes stirs an ancient, slumbering power.

Suddenly, the future is terrifyingly uncertain . . . at the very moment that Elena and her archangel need to protect a treasure infinitely more precious than eternity.