dax/rook.
Okay, great. I need you to read this very carefully and do exactly as I say. You can't ask questions yet. I'll give you answers later.
Sirius Black is on his way to the palace. I need you to stop him. Aprehend him however you can, even if you need to knock him out. Then bring him to [address]. I'll tell you everything then but do not let him into that palace. Can I trust you with this?