Mysterious Passenger

Publisher's description: Mysterious Passenger is a game aid for gamemasters running a space opera style game where the PCs own their own ship, and regularly transport passengers. It provides 6 possible adventure seeds for a "mysterious passenger" who comes on board, but doesn't seem quite right. Some of these seeds can be the entire focus of a session, while others may merely provide a diversion on the trip to make things interesting. Mysterious Passenger can be used with any system.