You learn that a Moth Priest had asked the driver to take him to the Dragon Bridge.

He tells you he is not sure if he had seen one. Asking a Carriage Driver Ask any carriage driver outside a stable if he has seen a Moth Priest. Once you find out from any of the NPCs about the location of the Moth Priest, the other optional objectives will be marked as completed as well. This adds the optional objective: Visit the College of Winterhold to ask about the Moth Priest Your quest log has also been updated: Prophet Eager to unlock the secrets of an ancient prophecy thought to be hidden withing Serana's Elder Scroll, Harkon has ordered his court to find a Moth Priest Note: You just have to do ONE of the optional objectives below. The wizards know about all kinds of things that people probably shouldn't know about. She tells you that the College of Winterhold would be the first place she would think to go for any kind of magic or historical thing. You can ask her: Where would a Moth Priest actually go? Do you have any ideas? Ask her where a Moth Priest would go. She asks you if you have any idea on how you are going to find a Moth Priest. Serana approaches you after Harkon is done with his speech.

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