Cécile's summer is off to a glowing start. She loves spending time with her older brother, Armand, who is finally home from France. And she and her friend Marie-Grace enjoy helping at a nearby orphanage, playing with the children. But a shadow falls over the bright summer when Cécile hears that a terrible sickness - yellow fever - is spreading in New Orleans. When yellow fever strikes in her own home, Cécile is more afraid than she has ever been before. Can she find the strength to help when her family needs her most? Includes an illustrated "Looking Back" essay about the yellow fever epidemic of 1853. The story continues in the fifth book in the series, Marie-Grace Makes a Difference.