What if I was to tell you that you are the only thing standing between your parents and death?
Your father is a terribly selfish man, Draco. He has failed the Dark Lord on many occasions, and he has cost him a Horcrux. Don't look so surprised. You know what a Horcrux is, don't you? Of course you do, your father must've told you. He wanted to make one for himself many years ago.
Lord Voldemort had seven. Your father cost him one. Remember the diary?
I see you're beginning to understand the dire situation your parents find themselves in at the moment.
How much do you love my sister? Is she as cold to you as she seems?
You're fond of her, aren't you? Good. Because only you can save her. She'll try to stop you from doing this, but if you do, she's gone.
If you succeed, you'll be a Death Eater next year. You won't have to go back to the tainted school you despise. You'll be a Death Eater, and you'll be much more important than your father could ever fathom.
What's that he called you when you were younger? A worthless little thief? He hates being in the hands of a person he considers inferior. But you are a pure-blood, and you know the Dark Ways. He did a good job pushing you towards them. That's probably the only thing he did right in his entire miserable life.
I know you don't care much about him. He's in Azkaban, but without Dementors, it's a lot like your dungeons. He'll he killed in his sleep if you fail. Can you carry that burden?
Your mother will become a human sacrifice. That means a few hours of torture to break her reason.
I thought you were stronger than this.
When your parents are dead, you'll be forced to become a Death Eater anyway. You'll be the son of a failure, a stigma you'll never escape, no matter what you will accomplish.
Then you'll be killed too.
Nobody will be punished for this. The Manor will become public property. Filthy Mudbloods and half-bloods will walk around your ancestral home, gazing stupidly at dark objects that should only be used to bring them pain.
Your mother tried to convince me to send you away. She was quite willing to sacrifice herself for your safety. It was disgusting to watch my sister act like a Gryffindor.
I wonder if she'll stay that strong under Cruciatus. One never knows. Some become noble all of a sudden when under such pain. Others beg to be killed. I think your mother will hold.
Do you think you could live in this house knowing your mother has been carried around the hallways, writhing, screaming until her throat was bloody, and tearing out her hair? That blood will never come out of the carpet and the walls. You'll never manage to order an elf to clean it.
You'll know it was your fault. You'll deny it, naturally. You're only human. But in the dead of the night, when your defences are down and you're on the brink of sleep, you'll imagine her screams and dream about her.
Think about what would happen if you succeed.
You'd find the respect you've always wanted. You'd be able to practice the Dark Ways undisturbed. You'll be honoured above all other Death Eaters.
I knew you'll come around. I'm glad you see it my way.
The task is far from simple. You have a lot to pay back in the name of your family's mistakes.
You must kill Dumbledore.