Publisher Annotation: That's what the note says that Max finds under his keyboard. He knows that his best friend, Josie, wrote it. He'd know her handwriting anywhere. But why she wrote it-and what it means-remains a mystery. Ever since they met in kindergarten, Max and Josie have been inseparable. Until the summer after fifth grade, when Josie disappears, leaving only a note, and whispering something about "whatnot rules." But why would Max ever think...