A rush of adrenaline went through him as his hands were bound together — a rush that might have been much more pleasant if he hadn't still been vaguely worried that Darrow might murder him, either intentionally or not. He tugged instinctively at the ropes, but they weren't budging.

"I'm not going anywhere," he said. He was vaguely aware that he was talking to try and keep Darrow present and thinking about him as a person instead of just an obstacle, but mostly this was instinct rather than a conscious strategy. "You've got both wands. So if you wanted to force me to help you... there's not much I can do about it," he pointed out. "I wouldn't try to fight you, or anything. That'd be stupid without a wand."