In more than one sense, Colonel Percy Harrison Fawcett (1867-1925?) was the last great Victorian explorer. Between 1906 and 1925, this self-trained archaeologist and former secret service agent headed into dense uncharted jungle wilderness more than half a dozen times. On his ambitious final expedition, he set out deep into western Brazil to find a lost El Dorado that he named "Z." Neither he nor any member of his small group returned from the depths of this Amazon "green hell." Obsessed by the story, New Yorker journalist David Grann embarked on his own quest to discover the truth about the explorer who became the model for Indiana Jones.