I'm with Panda on this one.  What's the point of having a Guest Star in the story if the entire plot is already out there and in the open?  I know that it goes against my RPer's instinct to explain<em>everything</em>, and it might for other players too, but believe me, this is one time where you need to leave gaping plot holes in the story, because the point of the Guest Stars is to fill those holes.<br/><br/>Take Restoration of Faith.  It's Karrin Murphy's story, but without the Guest Star appearance of Harry Dresden to defeat the troll, the child would never have been rescued.