Amazon.com (ISBN 0446606189, Mass Market Paperback)

That monstrous villain Gary Soneji is back in Cat & Mouse, the fourth book in James Patterson's series about Alex Cross, a police forensic psychologist, but he's not alone. In seeming support of the premise that you can never have too much of a bad thing, Patterson has thrown a second serial killer into the mix: Mr. Smith, a mysterious killer terrorizing Europe while Soneji practices his own brand of evil along the Eastern Seaboard. With two killers to track, Cross has his hands full--and Patterson has another hit.