The Burning Wire by Jeffery Deaver

Fans of Lincoln Rhyme will love this one. There is some maniac running around playing with electricity, causing killer arc flashes and using this silent, invisible weapon to kill people. The question is why and where will he, or they, strike next? To add more stress to Rhyme's life, the Watchmaker has appeared in Mexico and he is doing double duty helping authorities there also. Rhyme's physical limitations begin to take a toll.... A really good read. Sandy Penton