Mosquitoes don't bite Nala Simiyu, a half-Kenyan 7th-grader whose mother is in a wheelchair. But when a friend's father—who happens to head a large drug company—learns of her special trait, Nala wins a trip to Kenya to investigate how mosquitoes react to her father's family. Science leads to danger when a man heartbroken by his own daughter's death kidnaps Nala. With a main character who is brave, fallible, compassionate and spirited, this book raises issues of health inequities and justice.