The Gathering of Power
Victain Ablath is (or was) a powerful wizard apparently of some rank in the organisation known as The Zhentarim. He was working with Florak Gik in the Beggars Guild removing the Residuum from magic items until the adventurers put an end to his evil schemes (and his life). He was known for his potent sleep spell and his ever loyal Flesh Golem.
The adventurers learned a lot about him and his link to the Zhentarim from his Journal.