A nice detailed account. The evidence uncovered during this trial contributed much of our knowledge of the Nazi regime. Note, this book is focused entirely on the famous first trial, not the various follow up trials.
The trials were absolutely unprecedented: a war victor--who clearly had the moral high ground in the war--bent over backwards to make the process fair and legally defensible. The defendants had all appropriate rights. The process was based on evidence and law. Some defendants were acquitted. The Allied leadership should go down in history as heroes. I'm not sure that it mattered, though. Most of the criminals and their countrymen thought it was standard winners-write-the-history stuff.
Easy to see why Speer became so overrated after this; he was very good at appealing to the prosecutors.