A One-Round Living City Adventure
From the introduction:
The city has decided to make a preemptive strike against the Circle of Four, to end the threat of this group forever. Adventurers are being called by the score into the mayor's office, you included. With the destruction caused in previous Circle member appearances in mind, you are sure that Charles O'Kane is worried about the safety of the populace.
The Conclusion of the Elementally Speaking series. An adventure for characters levels 5 - 20.