From the back cover:
"The Free City of Greyhawk beckons. Touted as the Gem of the Flanaess, it offers excitement and adventure in the form of magic to be learned, deals to be made, and streets to be explored. But wait - something else lurks here that threatens adventurers at every turn. Is someone following youu - or is it your imagination? Why is your party receiving threats - you've been in town only a few days!
Something evil does lurk in Greyhawk. But before it can be eliminated, it must first be discovered. Can your party find it before it finds you?
Falcon's Revenge is the first of a three-part series of adventures for the ADVANCED DUNGEONS & DRAGONS 2nd Edition role-playing game, but it can also stand alone. Set in the famed City of Greyhawk, it gives adventurers a taste of life in the big city - with someone or something brewing trouble.
Falcon's Revenge is designed for five to seven characters of levels 5 to 7."