 That's what the panicked public thinks, thanks to a local TV reporter who got the leaked news from Scarpetta's rival, Investigator Percy Ring.But this is no run-of-the-mill serial killer.A shadowy figure has plans involving mutant smallpox, mass murder, and messing with Scarpetta's mind by e-mailing her hot naked photos of the murder scenes, along with cryptic AOL chat-room messages.