Harth hopped over the body to stand near the boy. He wanted to make sure not a single word was lost.
"This town, it sits on the gates of something...delicious. If I can open it, what we did to this gentleman here..."
Harth hiked a thumb back toward the body behind him.
"...will be mere child's play. Chaos on a grand level. Instead of a solo voice crying out, you and I could be responsible for a choir of screams."
Slowly circling the young killer, Harth continued talking. His movement was meant as punctuation of his point, not to menace the boy. Though, if it made him slightly nervous, the vampire wouldn't mind.
"There are those, though, who would prevent us from reaching this goal. On my own, I am powerful. Yet, a true killer also knows his limitations. When the night falls, I will spread blood and terror, and this town will come to fear me. But it's not enough. The citizens of York already fear the night, I'm just punctuation. That's where I need you."