Not perhaps since Henry James gave us the inimitable "Daisy Miller" has modern fiction presented the character of a woman so sensitive, so innately innocent in her faults and weaknesses, so inevitably tragic in her fate, as the heroine of this book, Margaret Capel. The story develops in this fashion: A talented woman writer, who is ill and under the influence of morphia, goes to a nursing home where a gifted girl has lived and died. For a year she lives in this home attended by the same physician who had treated the girl. In the "twilight" world, under the influence of drugs, she sees the phantom of the girl, and with the aid of a packet of letters and the confession of the physician, reconstructs the strange, tragic romance of Margaret Capel and her lover, Gabriel Stanton.