This was released as a free promo adventure for RPGA sanctioned play.
From the Introduction...
Recovering the red pearl has stirred many factions into action. Unfortunately with the instability of the region as it is the Greyhawk militia does not have time to hear such fanciful tales as ‘lost rituals’ and the like. Aramis has been betrayed by his own men and they now have the rest of the ritual items. Will you stick your neck on the line again and be able to break through their defenses? Only one way to find out.
A one-round Core Introduction adventure set in Greyhawk City for characters level 1-4 (APL 2 only). This is the third adventure in the series of Living Greyhawk Core Introduction Adventures.