"I'll talk to her," Colin said. "She's a nice girl - though what do you lot want me to use an excuse?" He stood up fully, absently popping a wrist as he spoke, looking thoughtful. He'd likely need an excuse; somehow running around telling everyone what they were doing wasn't the best idea. "She's an Unspeakable like me - she won't talk. But it'd be best to have you lot know what the excuse was, just in case..." He could probably think of something on the fly, too. Just in case. Argue he was testing a zombie's sense of smell - actually. That sounded interesting. Could they smell? "Something zombie related, maybe," he said, mostly to himself.
Colin forced himself back into the here-and-now. "Amherst - I'll likely need some things from you for it. I'm not not sure just what's needed, though; skin, I imagine. Maybe hair." His own knowledge of Potions was fairly advanced; nothing on Una's level, of course. But he'd never tried to make a scent-imitating potion.
"Can I write you once I know what's nee-" He broke off in a snort when when Adon named their little group, smiling slightly. Book Club. It wasn't as catchy as the Justice League, but it certainly served its purpose...