Corey Ann Haydu
Clover and Danny are the kind of best friends who make each other better: Clover makes lists, and Danny makes fun. Clover is thoughtful and quiet and loves science. Danny is chatty and funny and loves art. 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 then Danny comes down with a mysterious illness that won't go away, and the...