unsolved crime

Makers of "13: The Search for Leigh Occhi" delve into the 1992 cold case.
"Here are four individuals, who disappeared from whatever family nucleus they were in, and we haven't come to an understanding of who they are."
While it is the job of police in Illinois to solve crimes committed in the state, not every crime ends with an explanation and a conviction. The Illinois State Police has a list of 24 unsolved murders since September 1974, in hopes that it may lead to new information, tips or leads from the public.