Frank Sinatra was, by most accounts, the greatest entertainer of his time, known to his legions of fans as "The Voice" of the twentieth century. But his life intersected with worlds beyond show business—with politics, both left and right, with the underworld, and with the celebrity culture of postwar America. An exceedingly complex man, Sinatra articulated in his songs the romantic dreams and existential longings of his generation. His music and life had a Shakespearean "ages of man" arc—from the callow youth of "I Fall in Love Too Easily" to the world-weary maturity of "In the Wee Small Hours" and, ultimately, to the triumphant patriarch of "My Way." But above everything, Sinatra will be remembered, in the words of Pete Hamill, as "a genuine artist, and his work will endure as long as men and women can hear, and ponder, and feel...