It was the beginning of the summer holidays, and Ellie Ixos had six weeks stretching ahead of her. Some of her friends were looking forward to a lazy summer, with a bit of swimming, lots of parties and hopefully, if he weather was good enough, plenty of barbecues. Ellie's thrilled to be doing work experience at teen magazine, Heart, even though life isn't all celebrity chat and fashion makeovers for the wannabe journalist. She's given the job of walking the Editor's pampered pooch, when she really wants to track down a famous author for an exclusive interview. But could the little dog help lead her to the star