The Stockade Riots
Kill Bazil Thredd, the riot's ringleader, and bring his head to Warden Thelwater.
Kill Bazil Thredd, the riot's ringleader, and bring his head to Warden Thelwater.

Bazil Thredd is at the far end of the prison, so clear the side wings on the way.
Alliance: Warden Thelwater in Stormwind City (51.6, 69.3).
Alliance: Warden Thelwater in Stormwind City (51.5, 69.3).
experience only, 4,950 XP.
The Stockade Riots is a level 29 quest; you can pick it up from level 16. It takes you into Stormwind Stockades.
All Stormwind Stockades quests on one map ·Stormwind Stockades dungeon guide
Sources: Quest data from ForeverDB.net · ForeverDB: Stormwind Stockade · ForeverDB: Bazil Thredd · ForeverDB: The Dark Iron War · Warcraft Wiki: Stormwind Stockade (Classic)