Went down to Knocturn Alley today
I went into the darkest doorway
I said 'I want something dangerous
I want something useful
and powerful
and I want it by the handful'

Well he just looked at me strange
I said 'Don't you know who I am?
Don't you know my father?
Haven't you heard?
We're both death eaters
And who are you?
You're just a dirty little shopkeeper'

'So get me something that'll really knock them dead
Something that they'll think about all night when they lie awake in bed
Something that will set the dark things free and tweak (?) everything that's good and nice into misery