Immerse Yourself in a Cold Case Mystery. In the Cold Case series, you have been summoned to investigate the unsolved cases of victims murdered decades ago, piecing together the details that the police could never find. Inside the box, you will find realistic materials pertaining to the crime, and a complex story containing everything you need to crack the case. Follow the clues and submit your answers online to finally bring the killers to justice. Great for a small group of friends or a single-player experience, Cold Case integrates puzzle-solving and crime fiction into an immersive investigative experience. The police never identified the murderer. Can YOU?