Only when I came here to write the review I realized that this is the second of the series. Interestingly, the book I have listed this in the first place and the first book in the series is at the last place. So confusing.

In any case, another brilliant book by Asimov. His writing style in this one is so different from that of Robot series. It feels like a mystery/thriller. And if weren't happening in space, spanning two planets, it probably would be just that.

He managed to keep me glued to the book all the while building towards the big disclosure. And man, was that a disclosure! It was huge, and rightly termed as an even of galactic consequence!

Brilliant story line!

Oh, and I was so impressed and relived when I learned that this book is canonical with the Robot series. That's just awesome.