Murder Mystery Game. BE A COLD CASE DETECTIVE Unsolved Case Files puts you in the shoes of a cold case detective tasked with solving a murder that happened decades ago with only the original investigator’s case file. Think you can find out who Jane Doe is and who killed her on April 23rd, 2001? 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.