Black Sheep A Crime to Remember : Season 5 Episode 6
TV-14 (self-applied) Investigation Discovery 45m int(0)
Aired: March 24th, 2018 @ 10:00 PM EST on Investigation Discovery
Four members of the Mark family are found murdered in their Cedar Falls, Iowa, home, prompting police to suspect someone close to the family; the bizarre outcome shakes the townspeople and devastates the surviving members of the Mark family.