FOUND SANE. Jeffrey Dahmer, 31, who killed and dismembered 15 young men in one of the goriest killing sprees in American history; by a 10-to-2 jury verdict; in Milwaukee. The decision means that Dahmer, who has already pleaded guilty to the murders, will receive a mandatory life sentence for each count. A judge will determine later if and when he will be eligible for parole. Dahmer, who sat silently, was surrounded in the courtroom by the weeping families of his victims.