When Lord Harkon sees Serana, he immediately asks about whether she is still in possession of the Elder Scroll. That is rather cold considering that he had not seen his daughter for a long time.
Apparently Serana feels the same way too. She replies, “After all these years, that’s the first thing you ask me? Yes, I have the scroll.”
Harkon tries to explain it away by saying, “Of course I’m delighted to see you, my daughter. Must I really say the words aloud?” It does not sound convincing at all to J’Zhirr’s ears.
Harkon then says, “Ah, if only your traitor mother were here, I would let her watch this reunion before putting her head on a spike.”
In gratitude for freeing Serana, Harkon offered his blood. He says, “Take it, and you will walk as a lion among sheep. Men will tremble at your approach, and you will never fear death again.” Harkon says he and his clan are among the oldest and most powerful vampires in Skyrim. To refuse will mean that J’Zhirr is banished from the castle. Harkon says, “I will spare your life this once, but after that, you are prey.”
J’Zhirr is in a dilemma. In accepting Harkon’s blood, it will cure J’Zhirr of lycanthropy. However it may be just swapping one evil for another.
Sensing that this one needs more convincing, Harkon transforms into a vampire lord to demonstrate the power he offers. Now J’Zhirr is convinced that he will stay a werewolf. A vampire is a ugly thing, like a hairless gray humanoid bat. This one prefers to be a furry werewolf.