Political commentator Bill O'Reilly (b. 1949) is the author of more than a dozen books, including the bestselling "Killing" series -- popular biographies of Lincoln, Kennedy, Reagan, Jesus, and other historical figures co-authored with Martin Dugard. Several of the "Killing" books have been adapted into young reader's editions. O'Reilly is also known for his Legends and Lies series, with co-author David Fisher. He lives on Long Island.