City Primeval : High Noon in Detroit by Elmore Leonard

Clement Mansell knows how easy it is to get away with murder. The seriously crazed killer is already back on the Detroit streets -- thanks to some nifty courtroom moves by his crafty looker of a lawyer -- and he's feeling invincible enough to execute a crooked Motown judge on a whim. Homicide Detective Raymond Cruz thinks the "Oklahoma Wildman" crossed the line long before this latest outrage, and he's determined to see that the hayseed psycho does not slip through the legal system's loopholes a second time. But that means a good cop is going to have to play somewhat fast and loose with the rules -- in order to maneuver Mansell into a wild Midwest showdown that he won't be walking away from.