Hi All

While i was heading to Tidewater Cave of Nocturunal Quest in the south of Cheydinhal, i saw Forgotten Chapel and decided to call on. This chapel is related with A Sorcress Love Quest. I entered the chapel, killed a few bats and, vampire guards (Lord Ashraan, Lord Cromwell), sorceress Netherin and a spectral wolf. After that, i read the letter that i found on dead sorcress, quest updated and said that i should search the crypt of the chapel for more clues about Sword Of The Dragon which i am supposed to find. I searched the crypt throughly but found nothing else. Only special thing that found on sorcress is vampire dust like material "Dust Of Netherin". I am stuck at this point and i want to learn what should be done next to progress in this quest

Thanks