What could cause a man to suddenly snap and destroy everything he has built? This is the question that haunts Sergeant Ryan DeMarco after the wife and children of college professor Thomas Huston are found slaughtered. Huston himself hasn't been seen in days and is immediately cast as the prime suspect. In this series debut, DeMarco thinks that Huston couldn't have murdered his family. But if Huston is innocent, why is he on the run? And does the manuscript he left behind contain clues?