Name: Ghosts of the Past
Type: Mystery / Horror
Era: TNG/DS9/VOY/+
This is an adventure that I ran for my group last Summer when we were needing a change of pace type adventure.
What you need:
One Psionic Character or one character whose player has been making noises about wishing they were Psionic.
Prelude: The MacGuffin
It's a courtesy call away mission, Perfect chance for your PC captain to get off the ship if you have one, but this works well regardless as long as you use your highest ranking Command Branch PC or Line Officer if you lack one of those. The Gam'C Uffins are a pleasant minor member world of the Federation near the bend of the neutral zone that heads for the Black Cluster in the Alpha Quadrent. Aside from sending cultural arts and the occassional representative to the Federation Council, the Gam'C Uffins really don't interact too much with the rest of the Federation. Their planet supplies them well with thier material needs still, and there isn't anything so dramatically viable that they offer that can't be had somewhere closer in the Federation. Due to this, Starfleet has directed the crew's vessel to send a curtosy stop by the planet which is about to celebrate its 15th anniversary of Fed Membership.
The problem is, the ship is already carrying time sensative materials to yet another planet, so the solution is to launch a warp shuttle to carry the envoy team on 7-8 day flight (better if your ship packs runabouts) and then will return to pick them up enroute back the way they came.
Let your crew talk about the mission, dazzle them with promises of goods times to be had, after all, they aren't ever going to make it to the planet anyway, so promise the Moon!