            Hermione reluctantly let go and dipped a hand into her pocket. When he saw the bloodied dagger, Sirius’s brow creased. "I’m already tethered to the outside," she explained. Hermione drew up the hem of her skirt, exposing her inner thigh. Sirius breathed in sharply as he caught sight of the three runes, one larger and bloodier than the rest. "I need to do the same to you, then again to myself. Where should I..."