After discovering that the Amulet of Kings was taken by the Mythic Dawn during the assault on Weynon Priory, Jauffre wants the Hero to meet with Baurus in Imperial City to help find the location of the Amulet of Kings. The Hero needs to find all four volumes of the Mythic Dawn Commentaries. Mythic Dawn Commentaries 3, can be obtained by persuading Phintias to give up his only copy if his disposition with the Hero is 80 or higher.
Seridur tells the Hero about his group of vampire hunters called the Order of the Virtuous Blood. Basically, they kill vampires to cleanse Cyrodiil. Their first target is Roland Jenseric, whom Seridur claims to have witnessed bite and kill his own girlfriend, Relfina. Roland refers to Phintias for more proof of Seridur's outings.
After talking to S'drassa about Garridan's Tears, they need to go to the Arcane University in the Imperial City and ask Julienne Fanis about the Tears. She refers the Hero to a book, Knightfall, available at the First Edition bookstore in the Market District, if they want to learn more about possible locations of Garridan's Tears.