Harry, Ron and Hermione are joined at Hogwarts by Sherlock Holmes, John Watson and Castiel

Mr Weasley put down his paper and emblazoned on the front was a picture of a man with wild, matted hair and sunken, sallow skin. 'Who is that man' Castiel asked. 'Sirius Black,' Mr Weasley said grimly. 'The Sirius Black' Castiel said, eyes wide. He leaned closer to the paper. 'He's escaped' 'Yes,' said Mr Weasley, looking extremely grave.

Just then a handsome tawny flew in, followed by a black barn owl, one landing in front of Mrs Weasley and the other in front of Ron. Ron groaned as he saw the tawny. 'Isn't that Mycroft's owl?' Percy asked. Mrs Weasley opened it and read it to them. Dear Weasley family, We are hosting a small dinner party this afternoon at four o' clock and we would be delighted if you could make it. Unfortunately we are a few guests short, so please feel free to invite whomever you would like. I would very much like for our children to get to know one another a little better. Cordially yours, Mrs A. Holmes