After spending the night in Hightower, Our Heroes decided to travel to Dar Gwynnol to confront Eskar. They traveled for ten days before they reached the hidden mountain fortress, bringing Walthric and Akalda with them. Along the way, Akalda and Ahna spoke at length, with Akalda questioning Ahna about Dar Gwynnol and the Party's involvement with Eskar.
Eventually, the Party arrived at Eskar's fortress, where they were greeted by two Orc warriors, formerly loyal to Olegg. They told the Party that Eskar was expecting them, and that they were to be brought to him at once. The Orcs led the Our Heroes to the top of the main tower of the castle, where Eskar awaited them. With Eskar was a Drow priestess named Iliran.
Eskar questioned the Party, who explained their actions to Eskar's satisfaction. Iliran told the Party that she was an emissary from Lolth, who opposed Vecna for stealing the Spider Throne long ago. During the discussion, Eskar revealed his true identity as Kas the Bloody-Handed. He demanded an oath of eternal loyalty from the Party. When they refused, he attacked, intending to turn the Party into Vampire Thralls.
An intense fight broke out, with hidden monsters and drow assassins hiding out of sight assaulting the Party from all sides. As Saladin and Orutan engaged Kas, Akalda fought monsters on the Party's flanks. Jeyne and Walthric used their magic to weaken Kas and defeat the Orcs attacking them. Ahna managed to conjure a maelstrom that sucked Iliran and two other enemies into the lower part of the tower, along with their ally Akalda. The battle seemed in the Party's favor, but one by one Kas struck down Our Heroes until, in desperation, Ahna called upon the radiance of her goddess and defeated Kas. Kas turned to mist and raced for his nearest resting place.
The Party took a moment to recover and pursued Kas to the tomb they found before. Inside, they found the Curator above Kas' tomb. He attacked the Party, who swiftly killed him. Inside, they found Kas slowly regenerating. Our Heroes filled the sarcophagus with water and and dissolved what remained of the vampire's body. They then rested in the tomb, recovering from their intense ordeal.