Cross the Line (Alex Cross, #24)

by James Patterson

black from his visor helmet to his steel-toe boots, Mercury had his motorcycle backed up into a huge rhododendron bush by the Rock Creek Parkway south of Calvert Street. He sat astride the idling bike and cradled a U.S. Army surplus light detection and ranging device. He trained the lidar on every vehicle that went past him, checking its speed. Forty-five miles an hour, on the money. Forty-four. Fifty-two. Routine stuff. Safe numbers. Boring numbers. Mercury was hoping to see a more exotic and inflated figure on the screen.