On the eve of a global pandemic, Kathleen Gough, a theatre professor, becomes immersed in the lives of five artist-mystics, each of whom is a pioneer in her field: Hildegard of Bingen (1098-1179), the first known musical composer; Eleanora Duse (1858-1924), the first modern actor in the Western world; Simone Weil (1909-1943), philosopher, activist, and mystic, whom Albert Camus called "the only great spirit of our time"; Marina...