James Norton travels from Boston to Paris at his domineering mother's urging to bring home his fragile sister, Ellie, and their journalist brother, Rafael. He discovers Rafael devastated by the death of his Jewish lover, Olympe. Suicide, accident, or murder? Ellie is confined to a wheelchair owing to an unexplained paralysis. James is drawn into finding solutions to both problems and his investigations lead him to seedy brothels, the bureau of a hypnotist, the morgue of aspiring neurologists, and the wards of la Salpetrière, the famous neuropsychiatric hospital for women. The autopsy reveals that Olympe had been pregnant and the questions about her death multiply. The exoneration and return to France of Dreyfus plays as a backdrop.