"Well, I'm telling you now." The truth was that Eli didn't tell anyone. That had actually be the cause of the fight the night before, but he hadn't thought others needed to know. Not yet. But that was who he was, weird, creepy and full of secrets. It was how it worked when you were Eli Chambers - how things had to work.
"Okay," he said not fully convinced by Roger's base explanation of how this worked, but he was only an auror. Really, what he needed was an obliviator, someone who knew the nuances of the mind, but then again maybe that would be far closer of a probing than he wanted. "Show me. With one of yours." Eli needed to be sure that Roger could produce an appropriate memory on his own before they moved forward.