
Captain's Log: Stardate 2118 point, uhhh, 6.
A promising young recruit has been found dead in the holodeck. Her body lies dead in a chair while the 3D imaging program continues around her. It seems she was participating in an interactive version of Ten Little Indians; a clever whodunit.
"Computer, end program," screams Doctor McCoy. As the scenario ceases, all of the program's images fade away, including the chair that supported the dead recruit who then falls to the hard floor.
McCoy waves a tricorder over the body.
"Jim!" he breathes, "This recruit has been murdered!"

Signup here for the game. It's standard Mafia. I may cut off enrollment early if we reach a sufficient number of players quickly.