Mystery Case Files: Prime Suspects The Queen's Hope, the largest diamond in the world, has been stolen! Investigate the game's 29 unique locations by finding clues and cleverly hidden objects that will help you uncover the culprit and recover the stolen jewel. Mystery Case Files: Prime Suspects offers a new gaming experience every time you enter this visual masterpiece! - 22 incredible levels. - 29 unique locations to explore. - Beautiful graphics.