Arno Eliot is always causing trouble—and when he disappears at the zoo, Dawn Bosco will have to solve a mystery to set things right It's almost the end of the summer, and Dawn Bosco is hoping for one last mystery before school starts. Then Noni, Dawn's grandmother, has to babysit Arno Eliot, the worst six-year-old Dawn has ever met, for the whole week! Dawn doesn't want to spend her last week of summer vacation watching Arno. When Arno says he wants to go to the zoo, Dawn knows there will be trouble—and maybe a mystery, too. This ebook features an illustrated biography of Patricia Reilly Giff including rare photos from the author's personal collection.