John Wayne Gacy
Francis Wayne Alexander’s family didn’t even realize he had been dead since the late 1970s, Cook County Sheriff Tom Dart said at a news conference.
Likenesses may help officials identify remains.
The infamous Gacy tortured, sexually assaulted and murdered dozens of young men and boys.
They're supposed to be "burning in hell."
WHAT'S HAPPENING
The "Amityville Horror" house is officially on the market.
DNA technology and computing power may have pushed missing persons cold cases to a tipping point.