The Elder Scrolls V: Skyrim Game Add-Ons (DLC) Hints

Confront Harkon with Auriel's Bow.

  • 1 of 4: Return to Castle Volkihar and follow the quest arrow to the cathedral area's closed doors. (Note that it's now a separate game area.)
  • 2 of 4: Enter the cathedral, then stand and wait while Serana talks to Harkon. After that conversation is over, Harkon will talk to you and ask you to hand over Auriel's Bow.
  • 3 of 4: Even if you do, he'll still attack you, so it's best not to. In either case, you'll get the next objective.
  • 4 of 4: TIP: Instead of waiting for Harkon to talk to you, go around behind him while he's talking to Serana, then crouch down and deliver the most powerful sneak attack that you can (remembering to use your best weapon, best poison, etc.).