Regulus could feel the crawl of magical energy over his skin, making the hair on his arms and the back of his neck stand up, but he was far more focused on the Veil, his gaze transfixed on Bellatrix and the shadowy form he saw taunting them from behind the Veil.
He clutched the handle of the knife Sirius had given him until his knuckles turned white, and he drew his wand as well. "I feel it," he murmured. "Do you see that?"