In 1974, famed primatologist Dian Fossey introduced a young researcher named Kelly Stewart to a gorilla family. Stewart, daughter of actor James Stewart, was the first to see a tiny new baby gorilla. She named him Titus, and her journal entry began the up-close observation of his life that researchers have continued to this day. NATURE retraces the life of Titus, silverback leader, from birth to present reign, spanning a tumultuous period in the history of a species and a nation.