Caught
Our story starts on the seventh floor of Hogwarts. Kreacher is trying to do his master's bidding by spying on Draco, but what he doesn't know is the caretaker of the school Argus has been watching him and is about to make a move.
Kreacher was standing within eyesight of the place where Draco had gone through a door in the wall which had vanished behind him, but was concealing himself behind a suit of armour.
Argus crept towards him, knocked on the suit of armour ever so slightly and sneered, "Well, well, well, what do we have here, Mrs. Norris?"
Kreacher jumped slightly and hissed out of the corner of his mouth. "Go away."
Argus asked, "What is a little House Elf doing hiding behind a suit of armour exactly, are you a spy?"
Kreacher muttered, "I can't tell you why I'm here and you know that. I can tell you that my master is a student though."
Argus said, "I don't think the Headmaster would be too pleased about a House Elf creeping around up on the seventh floor."
Kreacher grabbed his hand and mumbled, "You can't tell him, my master won't like it."
Argus stepped back and replied, "Well, there's nobody else up here. So, if I just left, nobody would even know you were up here."
Kreacher inquired, "You're really going to just leave and not tell another soul I'm up here?"
Argus told him, "Who knows? You might return the favour one day. Now, good luck with whatever your master asked you to do."
He turned and began walking away with Mrs. Norris trotting by his side.
Kreacher shouted, "Wait!"
Argus turned slightly and stated, "The name's Argus Filch, if that's what you were going to ask."
Kreacher nodded and answered, "I'm Kreacher."