Bellatrix: And, if Draco should fail, will you yourself carry out the deed that the Dark Lord has ordered to Draco to perform.
Snape: I will.
Bellatrix: And will you, to the best of your ability, protect him from harm?
Snape: I will.
Snape: Take out your wand.
Bellatrix: Will you, Severus Snape, watch over Draco Malfoy as he attempts to fulfill the Dark Lord’s wishes?
Snape: I will.
Narcissa: I don’t doubt you, Severus.
Bellatrix: You should be honored, Cissy. As should Draco.
Narcissa: He’s just a boy.
Snape: I can’t change the Dark Lord’s mind, but it might be possible for me to help Draco.
Narcissa: Severus…
Bellatrix. Swear to it. Make the unbreakable vow. It’s just empty words. He’ll give it his best, but when it matters most, he’ll just slither back to a hole.
