The someday suitcase

Clover and Danny are the kind of best friends who make each other even better. They re so important to each other that Clover believes they re symbiotic: her favorite science word, which describes two beings who can t function without the other. But when Danny comes down with a mysterious illness that won t go away, the doctors can t figure out what s wrong with him. So Clover decides to take matters into her own hands by making lists list of Danny s symptoms, his good days, his bad days.