Thomas Soria appeared to be a devoted single parent to his son Thomas Sorea, Jr. known as "T.J." - even as he seduced the youngster, turning him into a sex slave. When T.J. reached dating age, he pimped his girlfriends to his dad and watched while they had sex. But it wasn't enough. Soria Sr's fantasies turned increasingly violent, culminating in an obsession with cutting and torturing young females while sexually assaulting them. On March 19 2000, in Lake Tahoe, Nevada, T.J., 19, lured 9-year-old Krystal Steadman into the family apartment. 40-year-old Soria Sr brutally raped the girl, then stabbed her to death. He wasn't worried - he knew T.J. would get rid of the body for him.