Dear Father,

You were right. You always are and I had a moment of weakness. I want to earn my place back with you. I have come up with a plan that should work. I will befriend Potter and his group and get them all over to the Dark Lord. You can take all the credit. I only wish to prove to you that I am sorry and that I was wrong.

Hoping you well,

Draco. 

I sent the letter that night. I rested well that night knowing I did the right thing.