From Wall Street Journal bestselling author Jeff Wheeler comes the latest installment in the thrilling Invisible College series as the fate of the world hangs in the balance of two star-crossed lovers determined to unravel fate--even amid betrayals, a looming war, and twisted secrets of the past.

For now, the centuries-long war between mortalkind and the Aesir is quiet. Yet not over. With the coming of winter, a season in which the Aesir thrive, they will resurface. Only two people, united by magic, can stop them. But first they'll have to survive more imminent threats to their lives.

Robinson Hawksley is of the tragic belief that his beloved wife, McKenna, has perished in a sorcerer's fire--just as he is about to ascend to the highest rank in the magic order of the Invisible College. But as Robinson navigates political machinations, deception, and betrayal, not everything is as it seems. McKenna, a woman of uncanny mysteries, has been abducted as an offering to the Aesir that promises to end the invasion once and for all. Now she is running for her life.

To reunite, Robinson and McKenna have so much to learn about themselves and each other. Amid secrets, sacrifices, and long-dormant memories restored, they still hold the power to save the world.