"Cold Case" is a television series that aired from 2003 to 2010, focusing on unsolved criminal cases. The show follows a team of detectives in the Philadelphia Police Department as they reopen and investigate cases that have remained unsolved for years. Each episode typically features a new case, highlighting the challenges of gathering evidence and interviewing witnesses long after the crime occurred. The series is known for its unique storytelling style, often using flashbacks to depict the events surrounding the original crime. It emphasizes the emotional impact on victims' families and the importance of seeking justice, even after many years. The lead character, Lilly Rush, played by Kathryn Morris, is a dedicated detective who is passionate about solving these cold cases.