It didn't matter what he told Charles now. He had retcon with him and it would be easy to go back and erase himself and everything from this evening from his mind. And Raven's mind. He was already making plans to slip it in her tea tomorrow. It wouldn't hurt her at all. Jack wasn't always in the business of hurting people.

Even ones that would come to hurt a great deal of people themselves.

"This isn't the first time you've seen this. Or me." Think Charles. "I use to visit to read you bedtime stories before your sister came along. I helped you home after a few benders. I even sent you a birthday card last year."

He understood Charles' dismay but there was a reason he planted himself in Charles' life growing up. He wanted to be a distant memory.

"My name is Jack Harkness. I'm from the Torchwood Institute. We're a time traveling research agency, Charles. And we want you."

Jack couldn't so the Uncle Sam impersonation quite right. Oh well.