Last week's conviction of Boulder County serial killer Scott Lee Kimball came despite the prosecution not knowing how many victims Kimball had killed.
From the Boulder Daily Camera:
Are there more victims out there?
"I'd say the chances are 50-50," Boulder County District Attorney Stan Garnett said Friday. "Kimball is certainly capable of it -- he's said things to make you think he has, but we have no solid leads."
The Kimball mystery is among the latest in a long history of unsolved Colorado murders and bizarre crimes in Colorado history. Check out some of the most chilling stories below: