David Grann is an American author and journalist known for his works of nonfiction. Born on March 10, 1967, Grann has written extensively for publications like The New Yorker and The New York Times Magazine. One of his most notable books is “The Lost City of Z,” published in 2009, which explores the mysterious disappearance of British explorer Percy Fawcett in the Amazon rainforest. Grann’s investigative and narrative skills are also evident in his other acclaimed book, “Killers of the Flower Moon: The Osage Murders and the Birth of the FBI,” published in 2017, which delves into a series of murders targeting the Osage Nation in the 1920s.