Sirius let out a barking laugh with all the prefectly duty talk, shaking his head slightly with a smile. Still, much like Remus' had done, Sirius smile wilted as well as he furrowed his brow once more. It wasn't for research but it certainly sounded very ominous. "Can't tell me?" Sirius asked, looking confused. "Why?" The Marauders told each other everything, there were no secrets. Why couldn't Remus tell him this?