Tricky one as I did not actually play the game (hence why I'm looking for it), was a game where you played as a renowned detective who gathered everyone for the big drawing room reveal of who did it... but you have no idea who actual did it. Game was I think bluffing your way through or some other last minute grasp at figuring things out. I am about 80-90% sure I saw the game on itch so figured I'd take a shot.