The movie does not include the fact that Jeffrey MacDonald once told Freddy and Mildred Kassab in November 1970 that he had tracked down and killed one of the assailants he claimed had attacked the family. Freddy and Mildred did not believe the story, and this caused them to become very suspicious of their former son-in-law. MacDonald later admitted he lied about the incident, and claimed he made up the story to help his former in-laws deal with their grief.