Backlash

Four cops, from four precincts, all shot dead. Originally published in 1989, Backlash is the second compulsive whodunit in the Jack Stryker series. From Paula Gosling, winner of the CWA Golden Dagger. A wave of chaos is erupting through the American police force. With four officers dead, Detective Lieutenant Jack Stryker is called upon to investigate. Alongside his partner Agent Dana Marchant, he must track the killer.
But are these homicides linked? Or is the perp choosing victims at random?When a federal investigator appears on the killer's hit list, the simple answers seem to be disappearing way too fast. Their target is a marksman with an uncanny criminal mind and a ruthlessly persistent purpose - and time is running out .