Follow James and Sadie Grey, separated by one crisis after another as James is called to a difficult birth, before being summoned north to The Hollow, a haven for young girls who suffer a variety of traumas, to investigate a rash of mysterious 'faintings.' At home, Sadie cares for patients and the practice, and encounters several mysteries of her own, including a hidden pregnancy, a fake birth, and a mistaken baby, who vanishes after a mishap at the county fair when a lantern tips during a Fox sisters' séance.