“They found his finger, Sirius. I don’t recall that ever happening when he changed before.” Unless he did that on purpose to frame Padfoot, a quiet voice says in the back of his head. As much as it doesn’t mean ale sense for Peter to have been the spy, it also makes no sense for it to have been Sirius. And Remus has always been fairly decent at spotting whenever Sirius is lying... though if he was the spy then maybe he’s better at it than Remus ever thought.

He hesitates before finally lowering his wand. It isn’t like Sirius has one anyway he could do anything with if he wanted. “Why should I believe you?”