After stumbling upon a hidden trove of diaries, acclaimed New Yorker writer David Grann set out to solve “the greatest exploration mystery of the twentieth century”: What happened to the British explorer Percy Fawcett and his quest for the Lost City of Z? In 1925, Fawcett ventured into the Amazon to find an ancient civilization, vowing to make one of the most important archaeological discoveries in history. For centuries Europeans believed the world’s largest jungle concealed the glittering kingdom of El Dorado. Captivating the imagination of millions around the globe, Fawcett embarked with his twenty-one-year-old son to prove that this ancient civilization–which he dubbed “Z”–existed. Then he and his expedition vanished. For decades scientists and adventurers have searched for evidence of Fawcett’s party and the Lost City of Z. Countless have perished, been captured by tribes, or gone mad. As David Grann delved ever deeper into the mystery surrounding Fawcett’s quest and the greater mystery of what lies within the Amazon, he found himself, like the generations who preceded him, drawn into the jungle’s “green hell.” His quest for the truth, and his stunning discoveries about Fawcett’s fate and “Z,” form the heart of this enthralling narrative.