    It did concern him that they were so obviously outnumbered. Even with Erus and his revealed status as a Parselmouth – which he assumed was just the wizarding way of saying he could speak to snakes – Harry was sure that they hadn’t been given the green light to exist incident free within the House of Slytherin. For now, all he could do was watch – watch and wait and plan, because he was just a child and he couldn’t do anything yet. He didn’t really understand the structure, the rules here – and make no mistake, Harry had learned that there were always rules.