Adeptly written, interesting structure, challenging concepts and ideas. Deserving of a close read. Story flows between 1st and 3rd person. Characters are complex and well drawn. The book is from the point of view of Hope Clearwater an ethologist turned primatologist. She tells her story of her life in Africa working with primates and her marriage to a neurotic and obsessed mathematician. Good action scenes in the jungle and facinating portrait of a marriage.