Murder on the Spaceship

You're a police detective for the Draco Solar System. You're supposed to be on vacation, but some rich woman got murdered on a spaceship cruise of the galaxy, and it just happened to take place in your jurisdiction. You have one night to investigate the crime and charge someone. You'd better get it right, and you'd better have enough evidence to make the charges stick, because after tonight, the suspects will be long gone.

Get statements from the suspects. Examine the evidence. You'll need to pay attention to the details, and you should probably take notes.