“The Seventh Wife” is perhaps the most captivating novel by Efimov. It is an amazing blend of genres—philosophical and adventurous. The tempo and eventfulness of an action-packed thriller are combined with precise, wise, and slightly ironic understanding of the psychology of Men with Women. Americans and Russians, millionaires and lumpens, intellectuals and terrorists—and at the center is the hero: the husband of seven wives, Anton Sebej, a genius in the insurance business, who sets off on a deadly dangerous journey for his daughter.