For Baltimore detective Mark Banning it starts out as a typical missing persons case: a man seeks his help in finding his daughter who disappeared after meeting with a man she met online. Mark enlists the assistance of his police detective friend Ed Taylor in the case. When the search results in finding the dead bodies of the girl, the man she met online, and the father as well it becomes much more than that. But there was another involved: a mysterious phantom witness who may have the answer to the entire mystery. However, the closer Banning gets to learning the identity of the killer, the more he realizes that he himself is marked to become the next body to be found!