Title: "...to the Last Man"
Setting: Starship, bridge crew
Type: Player's moral dilemma, combat, and trickery
Era: During Any War
While traveling through space the character's receive a distress call from a friendly transport ship loaded with refugees escaping a war torn area. They are under attack and heavily out numbered and are being boarded.
When the characters arrive, they should be facing a daunting starship battle - but not one they have no chance of winning. Also they need to stop the whole sale slaughter on the transport itself (conversely, the starship battle could look simplistically easy). Any security/rescue teams that beam over to the transport are grossly outnumbered and should start dropping soon. During this time the character's ship should suffer from some lucky hits crippling key systems (propulsion, weapons, etc...) and begin to be boarded as well.
Depending on your group, the loss of a character could be quite devastating, for this adventure try as best as you can to look as if your trying to end the campaign, kill every one.
The catch is, none of the deaths are real. The characters are having their morals tested, to see if they are willing to sacrifice every thing in order to save unknown innocents. After you have killed the last player character, everybody is suddenly back to doing exactly what they were before the distress call, only with either a voice in their heads, or an alien ship near-by (etc) complimenting them on their willingness to protect, defend, and die for what they're Federation believes in.
Phoenix...
"I'm not saying there should be capital punishment for stupidity,
but maybe we should just remove all the safety lables and let nature take it's course"
"A Place For Everything & Nothing In It's Place"