In the first book, Ron says that there wasn't a witch or wizard who went bad who wasn't in slytherin. In book 3 we learn that everyone thinks Sirius "went bad". Does this mean that Sirius was in...
Now that JK Rowling has officially named her next book who do you think is the half-blood prince?? I initally thought it could possibly be something to do with Neville Longbottom, but have since...