Memories of Malacrass

While I was a servant of de Vilebranch, I remember discussions about Malacrass's research into Ula'tek. Malacrass recorded his knowledge in scrolls that he kept with him. Now that he's dead, we need to find out what happened to dem. De Vilebranch hex masters won't talk willingly... but if you slay dem, I can use their own necromantic magic against dem to compel dem to speak.