The Captive Girl by David Nees

Against the wishes of his handlers, Dan takes on the task of rescuing a runaway girl and killing her captor. Dan's decision leads him on a dangerous chase through Croatia, Slovenia and Austria with a drug addled girl and two killers on his tail. He's following a dark and dangerous labyrinth of deceit, treachery and depravity that ends with a deadly terrorist attack that Dan must try to stop. He is divided between two loyalties, one to the CIA and one to those who see his missions as part of a larger battle between good and evil. Now he is walking a tightrope between deadly killer and protector.