The Things That Last Forever — Peter W.J. Hayes

After a house fire hospitalizes his partner and forces him onto medical leave, Pittsburgh Bureau of Police detective Vic Lenoski starts a desperate search for the woman who set the blaze. She is the one person who knows what happened to his missing teenage daughter, but as a fugitive, she's disappeared so thoroughly no one can find her.  

Risking his job and the wrath of the district attorney, Vic resorts to bargaining with criminal suspects for new leads, many of which point to North Dakota. He flies there, only to discover he is far from everything he knows, and his long-cherished definitions of good and bad are fading as quickly as his leads. His only chance is one last audacious roll of the dice. Can he stay alive long enough to discover the whereabouts of his daughter and rebuild his life? Or is everything from his past lost forever?