Playtime
Updated community averages based on player submissions.
Main Story
5h 37m
Main + Extra
—
Completionist
5h 54m
Media
1 video + 4 screenshotsLinks
About This Game
The Queen's Hope Diamond has been stolen! It's up to you to search for clues, find the offending culprit, and recover the stolen gem!
Add Mystery Case Files: Prime Suspects to your backlog
Import your Steam library in one click, then track what you finish and plan what to play next — free forever.
Last updated Mar 7, 2026