Cindy Rosenheim

When Marie-Grace discovers a baby outside her father's office and a slave catcher claims the boy, she helps place him at a white orphanage where she becomes a volunteer, as her friendship with Cécile grows and she hears rumors of yellow fever.

Marie-Grace Gardner, a doctor's daughter who has just returned to her native New Orleans in 1853, makes friends with Cécile Rey, whose prosperous family are free people of color, and is persuaded to change places with her at separate Mardi Gras balls.