This quest is not available in game.
Eliminate Houndmaster Loksey and Arcanist Doan.
I think that the root of the crusade's corruption can be found here. Arcanist Doan watches over the library, and teaches many young recruits to wield the arcane arts.
The Light is the only true path! You must kill him, <class>, and redeem this glorious movement!
<Joseph the Awakened shifts nervously.>
You'll want to dispose of Loksey as well. His hounds seem to disapprove of our noble intent.