Teen Wolf, Season 5

[Marie-Jeanne has just confronted Sebastien after learning that he is the Beast, and that Marcel has been covering for him]

Marie-Jeanne:
You have killed children.

Sebastien:
[shrugs] I kill whatever dares to cross my path.

Marie-Jeanne:
[horrified] Why?

Sebastien:
It's what I am. What I've become. You've heard the old story of what happens when you drink rainwater from the pawprint of a wolf. You become the Demon Wolf.

[Marie-Jeanne looks around the room, debating whether or not to expose him]

Sebastien:
Go. Go ahead. Tell them it's me. Then, watch me tear them apart in a matter of moments. Every last soul in this place.

Marie-Jeanne:
You're a monster.

Sebastien:
Beast, Marie-Jeanne. The Beast. You won't catch me. And you won't kill me. We're family, Marie-Jeanne. We're family.