In Modern Polygamy and Mormon Fundamentalism, Brian C. Hales takes on the arduous task of making the convoluted story of modern polygamy comprehensible to the average reader. Hales approaches the subject not as a historian or sociologist but as an active Latter-day Saint who has questions about the authority claims of modern polygamists.
Hales's central theme is what he calls the "One Man" principle. This theme is essentially that LDS scriptures teach that one man holds the keys of the sealing power, and this man is the only one who can authorize plural marriages (D&C 132:7, 18–19). Hales is frank in acknowledging his belief that the President of The Church of Jesus Christ of Latter-day Saints is the only man on earth who can grant the sealing power, including the sealing of plural marriages.