From the Front Cover:
Scholars Square is a relatively quiet corner of Phlan, but a series of odd thefts have the headmasters of various school in the area concerned. The headmasters' pleas for help have gone unanswered by the Black Fist, and the Lord Sage of Phlan decides to reach out to you and your kind to bring those responsible to justice. An adventure for 1st-4th level characters.
From the Introduction:
Welcome to The Scroll Thief, a D&D Expeditions adventure, part of the official D&D Adventurers League organized play system and the Tyranny of Dragons storyline season.
This adventure is designed for three to seven 1st-4th level characters, and is optimized for five 2nd level characters. Characters outside this level range cannot participate in this adventure. Players with ineligible characters can create a new 1st-level character or use a pregenerated character.
The adventure is set in the city of Phlan in the Cracked Crown inn, but turns explores a number of different locations in Scholar's Square before plumbing the depths of the ruins beneath Mantor's Library and the sewers beneath Phlan.