By Laurel E. Fletcher and Eric Stover, University of California Press, Berkeley, 210 pages, $40 (paperback, $15)

In her foreword to “The Guantánamo Effect,” Patricia McGowan Wald, former chief judge of the U.S. Court of Appeals for the District of Columbia, writes that it “adds a new chapter to the chronicle of America’s dismal descent into the netherworld of prisoner abuse.” The book, written by Laurel E. Fletcher and Eric Stover and based on the work of a team of researchers from the University of California, lives up to this ominous appraisal. It does so with exhaustive documentation and laudable clarity of expression.