Lily’s sister, Christina Rush, was murdered in 1975.
Christina, known as Chris, was the younger sister of Detective Lilly Rush, the main character on the show “Cold Case.” The storyline involving Chris’s death unfolds in the episode titled “The Woods.” It is revealed that she was murdered by a serial killer named George Marks, who had a pattern of killing young women and burying their bodies in the woods. The case becomes deeply personal for Lilly, as she had long been haunted by her sister’s unsolved murder. Throughout the episode, Lilly works tirelessly to piece together the events that led to Chris’s death, ultimately bringing closure to the case and finding justice for her sister. This revelation not only provides a significant emotional arc for Lilly but also adds depth to her character’s backstory, explaining her dedication to resolving cold cases.