In December of 1971, the bodies of the List Family were found shot to death in their home in the suburbs of New Jersey. However, the man responsible wouldn’t be found for over 18 years.
Sources, Credits, & Additional Information:
All Thats Interesting Article on the murder
Union Community College Course on the Murder (graphic images of the crime scene)
ABC News Article interviewing John List
John List Wikipedia
Forensic Tales Article on the murder
Square Mile of Murder Podcast