"The next day, he did return with more questions, these ones very specific. He wanted to know about the vampires of eastern Skyrim. I told him about the most powerful tribe, the Volkihar, paranoid and cruel, whose very breath could freeze their victims' blood in the veins. I explained to him how they lived beneath the ice of remote and haunted lakes, never venturing into the world of men except to feed.
Movarth Piquine listened carefully, and asked more questions into the night, until at last he was ready to leave.
"I will not see you for a few days," he said. "But I will return, and tell you how helpful your information has been."
True to his word, the man returned to my chapel shortly after midnight four days later. There was a fresh scar on his cheek, but he was smiling that grim but satisfied smile of his.
"Your advice helped me very much," he said. "But you should know that the Volkihar have an additional ability you didn't mention. They can reach through the ice of their lakes without breaking it. It was quite a nasty surprise, being grabbed from below without any warning.""
-Excerpt from "Immortal Blood", in-game book by "anonymous".
We need this. Unfortunately, it looked like we aren't getting this, but if we're in Skyrim, and there're dragons busting through the ice, and the entire DLC is focused on vampires... we need to see the Volkihar. How amazing would it be to have one pull you under the ice, and have to escape? And it's criminal for Bethesda to tantalize us with such awesome things and then not actually include them in the game (see also: Werebears).