Dwight Garner at the NYT:
By this point in “King: A Life,” Eig has established his voice. It’s a clean, clear, journalistic voice, one that employs facts the way Saul Bellow said they should be employed, each a wire that sends a current. He does not dispense two-dollar words; he keeps digressions tidy and to a minimum; he jettisons weight, on occasion, for speed. He appears to be so in control of his material that it is difficult to second-guess him.
By the time we’ve reached Montgomery, King’s reputation has been flyspecked. Eig flies low over his penchant for plagiarism, in academic papers and elsewhere. (King was a synthesizer of ideas, not an original scholar.) His womanizing only got worse over the years. This is a very human, and quite humane, portrait.