I've got a nicely bedded in campaign now and everything is running pretty smoothly (good balance of PCs, some memorable NPCs, over arching plot and a sinister machiavellian villain to tie it together).
However for our next session only two (of 4-6) players will be available and I (knowingly) ended the last game on a cliff hanger, which I really think *deserves* the majority of the party to be there to see the resolution.
Therefore I'm planning to drop in a one off session for the remaining players which will focus on a pair of Arbitrators on Port Wander (one a local officer the other a Calixian Marshal who has followed a felon to the Port). The investigation should play out with them tracing his path (cracking heads and busting scum in the process) until they discover, at the end of the game, that he left port on board the players ship.
This will then foreshadow an ongoing plot about the felon (and accused cult leader and heretic) actually being a member of the crew - in fact the players may discover clues which will hint to them (as players*) which NPC crew member he might be.
Anyone tried anything similar before? This is in a way a "trial run" as in a few weeks I'm planning to spring a switch on teh whole group and have them play a squad of Astartes who they have been running away from recently so that they can see "the other side" and discover what they are really after and prepare them for when they come face-to-face (and face a mutual, greater, enemy)
*I'd stress that the guys (& gal) I run for are very good at separating "player" and "character" knowledge. So They get teh benefit of seeing the "bigger picture" even though their regular characters will remain in the dark.