Severus Snape, spell inventor, the Half-Blood Prince, teacher at Hogwarts, member of the Death Eaters and your father...

When Voldemord found out about your existence, it was immediately clear that if you were old enough, you would join the Death Eaters.

That was two weeks ago now. And the dark mark just hurts you, your arm is completely infected, your arm is burning, it hurts and you feel like cutting your arm off would be liberating.

Your dad seems to have noticed that too, because you're always hiding your arm from him, but now that you're tidying up a few books in the library with him, you can't hide your arm anymore.

"I've noticed that something is wrong with you. Do you want to be honest with me or do I have to find out on my own?" you suddenly hear your dad, who is putting away a few books next to you.