This book is the third in the third in the Robot mystery series, and is once again set on a Spacer world. This one was written 30 years after the first two, and Asimov’s style has noticeably changed between the 1950s and 1980s.
The book starts off slowly, with a lecturing tone which I found quite annoying. For example, devoting an entire page to a discussion of whether the deliberate death of a a robot (even a human shaped on) is murder. Often the first part of the book feels like it is going excessively slowly.
However, its only the first third of so of the book which suffers this flaw. Its as if Asimov realized after a while that he also had a story to tell, and got on with it. The book then improves massively and has a good story.
So, overall I liked this book, although the first part of the book wasn’t as good as the rest of the Asimov I’ve read.
[award: nominee hugo 1984]