Lupin's surprise was easy to read, and Gawain felt a twinge. "No, you don't," he contradicted, setting down his fork with a clatter and a sigh. "I turned my back on every professional belief I have when I tampered with the evidence of the Davies case and keeping your identity secret. I can't do that again - and you know it would be required."
He still thought they were vigilantes, too, though the certainty that they were only making things worse had diminished.