The mystery of a family tied up with wire and massacred while no one heard a sound remains unsolved.
The Keddie murders, a brutal quadruple homicide that occurred in Plumas County, California, US, is still a mystery despite an exhaustive investigation over the years.
On April 12, 1981, 14-year-old Sheila Sharp arrived at cabin 28 on Keddie Resort Road after attending a nearby sleepover.