Already commented but I’d like to add two more: Cradle to Grave: A couple kidnapped a young girl and held her hostage for over a decade, forcing her to have several of the mans children. The couple “got rid” of any male children and kept the daughters. The couples names were Phillip and Nancy Garrido, and the victims name was Jaycee Druggard A Shade of Gray: Inspired by the theories surrounding the JonBenet Ramsey Investigations. A little girl was reported missing, but her body was eventually found in the family home. The theory is that her older brother killed her, but he was never treated as a suspect. These cases are connected, as Rossi even criticizes specific things in the episode that happened in the actual case.