Hyperion was reading one of the Muggle newspapers in his study on the third floor when the dulcet tones of his sister's rage floated up to him. "Oh aye, I just had to get that charm installed on the door so I could hear people arrive," he muttered, placing the paper down on the desk before grabbing his wand, and then prudently a few other defensive items. "Slinky," he called, rather more curtly than was usual. "I want you to go to Montgomery Castle and stay there until I call for you, is that understood?" He waited several moments before a rather accusatory crack confirmed that the elf had followed his command.
With a final sigh, he disapparated down to the front door and opened it, surveying his sister for a moment. "How may I be of assistance," he asked her in a completely deadpan voice.