Songbird (Megastar Mysteries)

the long version

their regular-girl lives are turned upside down when Rosie gets caught up with a desperate plea for help from a mega pop star, Mirage Mullins, who's doing a signing in their local record shop. The girls don't know quite what to do, but they'll go to any lengths to help save the career of their favourite pop star. The trio of friends must find a way to solve the murky mystery surrounding Mirage's gorgeous stepbrother, Joe, and they resolve to get to the bottom of the strange behaviour of Mirage's manager, Simone Jones.