From the outside, the List family seemed to be living the all-American dream. John List was a successful accountant with a beautiful wife and three happy healthy children living in a gorgeous mansion-style home. That perfect image would come crashing down in December of 1971 when John committed multiple murders before going on the run.
Sources:
"Forensic Files" The List Murders (TV Episode 1996)
https://www.nytimes.com/2008/03/25/nyregion/25list1.html