I agree with the New York based reviewer below. The introduction of the psychologist's own opinions into conversations with the defendants and into descriptions of events in the text does spoil this book somewhat. The omission of coverage of a number of the defence cases 'for brevity' is very annoying.
Another quibble is that the account presented is strongly biased towards coverage of conversations with Goering, Schact, Von Shirach, Ribbentrop, Frank and Speer - whether this is because the others (e.g. Frick, Funk, Kaltenbrunner) refused contact with Gilbert, coverage was simply omitted or if they were not approached at all is not made at all clear. Finally, I would also agree with the sentiment expressing a desire for more (some!!) coverage of the scientific psychological examination of the defendants.
This is, however, a very engaging account of the trial and the personalities of some of its protagonists, which is, by definition, unique. Those seeking a thorough description of the history of the trial, the legal issues, geopolitical wrangling and the prosecution characters will be better served with the excellent 'The Nuremberg Trials' by Ann and John Tusa. That said, this book really should not be overlooked, as it is an excellent read.