“Blazing demon-on-vampire supernatural action . . . Frank’s fans will be thrilled to see her return to the Nightwalkers in such fine form.” —Publishers Weekly (starred review)   A Demon betrayer and her rogue Vampire lover have combined forces to form an unfathomable force of evil bringing the entire Nightwalker society to its knees. The Demons are threatened with an inconceivable loss that will change the destiny of their kind. Only one warrior can save them—and time is on their side . . .    Four centuries ago, Jacob’s older brother, Adam, disappeared without a trace, but now the former Enforcer has returned. Ripped from the past, Adam must get used to a new era and new alliances—including the Vampires they once fought, like Jasmine. Adam’s one previous encounter with the black-haired temptress had left them both shaken with a forbidden desire they could never forget.    Now the rules of love and war have changed.   And when Adam and Jasmine team up to take down their greatest enemy, they will push each other to the limits of their powers and surrender to a timeless obsession—taste by taste and touch by touch . . .  Praise for Jacquelyn Frank and the Nightwalkers series   “A stunning new talent.” —Sherrilyn Kenyon, #1 New York Times–bestselling author   “A fresh, original, new series . . . Jacquelyn Frank knows how to write an intense, rip-roaring good read!” —Cathy Maxwell,  New York Times–bestselling author   “Jacquelyn Frank’s Nightwalker series depicts an engrossing alternate world, drawn in prose that is lush and lyrical.” —Linda Howard,  New York Times–bestselling author