Dr. Katherine Ramsland, Dr. Gary Brucato, and executive producer Katherine Vaughyn participated in the "Violent Minds: What Drives the Most Heinous Killers" panel.
When someone shot four people at a N.Y.C. nightclub, leaving one dead, officers from other precincts recognized similarities to the separate murders of three Brooklyn men.
"He's lost like 7 inches and he's in a wheelchair," Kerri Rawson said of her father, serial killer Dennis Rader, as investigators work to link him to other murders.
William Bonin was convicted of killing 14 boys and young men in Southern California, sexually assaulting and torturing many of them in his van — and he had help.