Koveras

Sarevok, in the guise of Koveras, is found on the second floor of the Candlekeep Library during the events of Chapter Six. This is the second time that Gorion's Ward has an encounter with his Bhaalspawn sibling, even though the Ward is completely unaware of who this individual is or what his relationship to the Ward is.
Before actually having an encounter with Koveras, several people that Gorion's Ward may run into while exploring the library will speak of Koveras and his curious mannerisms. Both Bendalis and Karan will offer some comment on their own encounters with Koveras. A Priest of Oghma will be enamored by his knowledge of the prophecies of the great Alaundo and Rieltar will reveal that Koveras is his son. And Tethtoril will hip the Ward to the fact that Koveras is Sarevok spelled backwards.
==The Encounter==
When Gorion's Ward reaches the second floor of the library and enters Koveras's line of sight, he will approach the Ward and initiate dialogue. Depending upon which dialogue line you follow, Koveras will either walk away or he'll offer the Ward a magic ring that Gorion supposedly gave to him in the event that evil should befall Gorion.
Koveras will also drop the hint that the two members of the Iron Throne currently visiting Candlekeep are quite vulnerable and it would be easy to kill them.
After the Ward is accused of the murder of Rieltar and Brunos (whether you actually did the deed or not) and brought to the jail in the Barracks, Ulraunt will mention the Koveras came forward with information that could tie the Ward to their deaths.
When the party reaches the exit from the Catacombs to the outside world, a human named Diarmid will be found standing near the exit point within the catacombs. He will provide some interesting information about Koveras depending on which dialogue line you follow.