Murder Mystery Game. BE A COLD CASE DETECTIVE – Unsolved Case Files puts you in the shoes of a cold case detective tasked with solving the murder of a young, rising pop star who was killed during one of her performances. Think you can figure out who killed Luna Knight during her Atlanta performance? Unsolved Case Files will let you find out once and for all whether you’re as good as the detectives on TV. There will be limited available seating, please stop in to pre-register. For more information, call the South Webster Branch Library at 740-778-2122.