One shot : a Jack Reacher novel / Lee Child.

Enhanced descriptions from Syndetics:

Now a major motion picture
 
"Electrifying . . . This series [is] utterly addictive."--Janet Maslin, The New York Times
 
Six shots. Five dead. One heartland city thrown into a state of terror. But within hours the cops have it solved: a slam-dunk case. Except for one thing. The accused man says: You got the wrong guy. Then he says: Get Reacher for me.
 
And sure enough, ex-military investigator Jack Reacher is coming. He knows this shooter--a trained military sniper who never should have missed a shot. Reacher is certain something is not right--and soon the slam-dunk case explodes.
 
Now Reacher is teamed with a beautiful young defense lawyer, moving closer to the unseen enemy who is pulling the strings. Reacher knows that no two opponents are created equal. This one has come to the heartland from his own kind of hell. And Reacher knows that the only way to take him down is to match his ruthlessness and cunning--and then beat him shot for shot.
 
"Pulse-pounding action."-- Chicago Sun-Times
 
"Compelling, furiously paced." --Los Angeles Times
 
"Crackles with excitement." --St. Petersburg Times
 
"Pure adrenaline, from its well-constructed setup to its explosive, unforgettable finale." --The Miami Herald