THE MURDER MYSTERY THAT LETS YOU THINK LIKE A COLD CASE DETECTIVE.Fans of all things true crime are going to read Real Unsolved Case Files, a new murder mystery book that lets you take on the role of cold case detective.Nothing haunts the mind and stirs the imagination like a real-life whodunit.Not much is scarier than crimes that go unsolved: murderers and kidnappers on the loose with police efforts leading nowhere.These are cases of vanished children, bodies found in mysterious circumstances, and serial killers who disappear back into society.As time goes on, these cases get colder and colder and the shroud of mystery thicker.