They are elusive human monsters, who are compelled to kill again and again. As their numbers grow, so do the body counts. Catching them isn't easy, for they often look and sound just like the rest of us.

Serial Killers will look at the growing crime wave caused by those who kill again and again, driven by their need for self-gratification. Between 1975 and 1995, there were more documented serial killings than in any previous 25-year span. And there may be countless undocumented serial killings, for it can take years to make a connection between the killer and the victims. What can be done to better target and catch these cunning criminals?