The Ruby Tower Syndicate
It seems the two returned to the ruined temple soon thereafter. Valandra was found to have been killed and reanimated as a mad wraith. Zanna’s belongings were found near Valandra’s corpse, but her body was not in evidence. It was discovered somewhat later that Zanna had been reanimated as a wight, set by a drow necromancer to guard a gateway into the Underdark.