"Before I was taken, I was--" On second thought, telling Remus exactly where he'd been would not be comforting. "It was after that. I found him. You caught up with us and I showed you and Harry-- Pettigrew, he's alive. He cut off his finger before blowing himself up, then he turned into a rat and disappeared into the sewers."

He was keenly aware of the fact that this time, he didn't have Peter with him to show as proof. He only had to rely on Remus's trust in the map they'd made. And-- well, whatever trust he might have in Sirius. There must have been at least a spark somewhere for him to accept it before.