Anne Merrill, a reluctant psychic, becomes an OSS agent in World War II and soon finds herself not only fighting the regular war but, also, a psychic war with her powerful, psychic father, Albert. He and the worldwide, ancient, secret society, the Chhayas Society (Shadows Society), are using psychic powers along with earth forces that magnify those powers to assist the Nazis. Besides honing her psychic abilities to triumph over her father, Anne, also, uses them in the regular war effort when she plays cat-and-mouse games with a female, Nazi spy in Istanbul. Later, she is thrust into the heart of the Third Reich, Berlin, when OSS penetrates the Third Reich to gain valuable inside information. During all this, Anne and fellow OSS agent, half-white, half-Navajo, Paul Bancroft, who is haunted by the shadow of a terrible, hereditary disease, fall in love. At the book's conclusion, the otherworldly battle and the ordinary battle merge into one.