Culling the Beast

Kill the  at 
Either Fura Bloodmouth or Garan Marethi will send the Dragonborn to a random location to take out a powerful vampire before they become a problem.

Example locations:
 * Moldering Ruins
 * Mara's Eye Pond
 * Pinemoon Cave
 * Haemar's Shame

Return to 
Returning to Fura or Garan may yield an item like:
 * Leather Armor of Major Restoration
 * Circlet of Alchemy
 * Elven Helmet of Conjuring
 * Sanctified Steel Battleaxe
 * Potion of Blood ×3

Die Jagd nach der Bestie