Remus watches him quietly, studying. Of course, Regulus had been at home with his parents when Sirius was at school for the first year. Must have been hard. But hard things happened to a lot of people.

He wasn't Sirius, though, and so he could see how Sirius' decisions and his way of living would affect Regulus' as well.

"You know or you think you know about Horcruxes being destroyed by dying?" Remus repeats his question because it sounds that Regulus is talking about something else. About the Death Eaters, perhaps.

He doesn't really need much more under the influence of Veritaserum. He's confirmed the facts and the rest is about Regulus.

And they know where to go for more information. The Black library.

"You said you left a fake one. So, currently nothing has happened yet, as far as Voldemort knows. We'll figure it out tomorrow."