Extend the Story - Add a Room

You look each other in the eyes and nod knowing what to do which was to see what had caused the noise.

So you both approach your door and slowly turn the knob, and swing the door open to find nothing out of the ordinary, so you continue and head downstairs where the sound seem to come from.

As you head to the family room you see a movement coming from the library, so you run to see if you can catch this person before they can get away. When you both get to the door leading to the library, he motions you to stay behind him and you nod and let him get in front of you.

Draco opens the door to see that there is a person in a dark looking cloak with a hood that was hiding his face.

who is it