The Steel Kiss by Jeffrey Deaver 

How do you catch a killer when he is everywhere at once! Detective Amelia Sachs is in pursuit when she hears the scream. Stopping to help a man trapped in a horrific accident, Sachs has to let a suspected murderer get away. But was it really coincidence? Did the killer make it happen? Sachs and Lincoln Rhyme are facing a new kind of opponent: Someone who can kill by remote control. Someone watching every move they make….