"I've known for ages." Hermione sneered. "My first clue was how you were always sick around the full moon. Then Professor Snape assigned the essay on werewolves, giving me more information. Around November, my Potions lessons with him progressed to such a level that I started brewing your Wolfsbane, and that was the final key. After, I did some research. Remus John Lupin, bitten by Fenrir Greyback at the age of 5 on the eve of his birthday. You attended Hogwarts and became a prefect though not head boy. Your grades were all excellent and you were among the top Gryffindors in your year. You were best friends with James Potter, Sirius Black, and Peter Pettigrew. When you were 16 your parents died and you went to live at Potter Manor."