"A thorough and sophisticated effort to answer an interesting question: How did an indifferently raised, self-flagellating kid from a just-making-ends-meet, desultorily functioning Long Island family, in Massapequa, turn into Alec Baldwin, gifted actor, familiar public figure, impressively thoughtful person, notorious pugilist? . . . Beautifully written and unexpectedly moving . . . . Baldwin writes with great knowledge about old films,...