Isran asks me to speak to him privately, so I follow him upstairs to a secluded area. I know he's a good guy, but he's strangely intense and I don't fully trust him. So I'm glad that Elendyl and Hoth are here to defend me if things go south. What happens next though, is nothing that I could have expected.
Serana is here! And she has betrayed her father, stolen the Elder Scroll and brought it to us. Predictably Isran is dismissive of her and wants nothing to do with her plans, but I can convince him to hear her out. Apparently, she wants to find this Moth Priest that can translate the contents of the Elder Scroll for us. Maybe it can teach us something about how to stop the vampire threat.
She offers to go with us to Winterhold, where we can gather more information at the Mage's College about the whereabouts of this priest. I accept, but when we go out to ready the horses, she summons that ridiculous horse again... I'm regretting my decision already.

The ride to Winterhold is uneventful and the mages are downright irritating. First they force me to cast a spell before they let me enter, then they insist on giving me a guided tour of the premises before allowing me to go in the College proper to glean some information out of one of these wizards. Finally, we find a library with a great stack of books and scrolls to browse, the librarian is a bit gruff but helpful enough to tell us that he knows of a Moth Priest in Dragon Bridge. He also asks us to locate some books for him on his travels. On our way out, we also hear of a mage doing an expedition to Folgunthur to find out more about some Gauldur legend or other. Seeing as that is really close to Dragon Bridge, I decide we'll pass that on the way.
Again, nothing much happens on the way West and we reach Folgunthur without any attacks at all. Maybe word has got around about Hoth and Elendyl..
Anyway, we enter the Nordic tomb and after fighting the obligatory Draugr, we find the body of the mage doing the research here.

We take the Ivory Claw and head further into the tomb where we find a great hall. Almost immediately the dead around us all awaken at once and rush us down. Even with Hoth and Elendyl going full tilt and Serana and I backing them up, this fight lasts for quite a while. Eventually the weaker ones fall, and only their leader is left.

With all of us focusing on him and without his minions to protect him, he is defeated pretty easily. We take an amulet of his body and the Ivory Clas to bring to the Mage's College, when we return there.
For now, it's onwards to Dragon Bridge.