"Potter - I’ve been asked to pass on a message from Lupin and Black," for a moment, his act failed, and Snape looked solum, "They have asked that you speak with them "through the pre-agreed method’ at ten o’clock this evening," then, he remembered himself, and sneered, "you may leave - I will see you in approximately two week," Harry nodded distractedly, barely having the presence of mind to thank the potion’s professor and bid him goodnight, thoroughly distracted as was wondering what Sirius and Remus wanted to speak about when they had only been separated from him for less than forty eight hours.