He could have been a mass murderer, but his identity (and alleged crime) remains unproven still today. It's the story of an Illinois man who in the mid-1940s may have tried to gas his entire town.
There are several unsolved murder cases in Illinois dated back all the way to 1975, and many families still don't have any answers as to what has happened.
When you learn about the infamous Schweppe Mansion near Chicago, you'll likely be stuck in the weird place of wanting this beautiful home and being terrified of it.