Bloodline | Beginning TES V: Skyrim - Dawnguard Guide
Last update: 11 May 2016
New primary objective: Lead Serana to her home
In order to leave the crypt, enter the corridor on the other side of the large circle. During the march you will not only be attacked by undeads, but also gargoyles. Luckily your companion knows how to fight.
Eventually you will reach a big room, where you will have to fight waves of enemies. With all of them dead, approach the writings on the wall on the right. That way you will learn the Drain Vitality shout.
When you finally get outside, head to the north-west corner of the Skyrim. If you don't have any nearby place discovered, take a carriage to Solitude and head west from there.
Nearby Northwatch Keep you will find a small harbour, where the Icewater Jetty is waiting for you.
Thanks to it you will reach the island on which Serana's castle has been built.
New primary objective: Speak to Harkon
After heading inside, wait for Vingalmo to greet your companion and afterwards speak to Lord Harkon. In return for brining his daughter home, the vampire will offer you his own blood. Depending on the choice you make, you will begin one of the excluding story lines. By rejecting his offer you will choose to support the vampire hunters, while accepting it will cause you to become a Vampire Lord.