For Mack McKinley and his team of GhostWalker killing machines, urban warfare is an art. But despite a hard-won knowledge of the San Francisco streets, Mack knows from experience that too many things can still go wrong. Danger was just another part of the game – and now he's come face-to-face with a woman who can play just as tough. She's Jaimie, a woman with a sapphire stare so potent it can d...