This is the 4th in the Chase Dagger series. What if everything you knew about your past was wrong? What if who you thought you were was all a lie? In CHASING GHOSTS Dagger comes face-to-face with his past in the form of an intruder who first wants to hire him, then tries to kill him. What prompted this response? The answer lies in a series of numbers which triggers Dagger's memory and leads him to a remote city...one mile below the surface, technologically advanced yet abandoned. Or is it? The fourth book in the Chase Dagger series combines mystery with a dash of sci-fi.