Book excerpt: In the world of #1 New York Times bestselling author Christine Feehan’s GhostWalker series, there are men and women who are invisible to their enemies, yet unprotected from the passions that could be their downfall.... Saber Winter is running from her past when she meets Jess Calhoun, an ex-Navy SEAL, physically and emotionally compromised by his own mysterious and violent history as a Ghostwalker. What Jess senses in Saber is a kindred spirit, a lost soul desperate for sanctuary. He offers her a home, a job, and a haven where she can safely reveal the secrets that shadow her. But danger follows her, too. Now, the riddles of both their pasts are about to collide, shattering the promise of their future with the ultimate betrayal.