Picked this up for free with Kindle Unlimited because I love the tv series and have been binge watching it lately. This book focuses on the 5 season original series that ran from 1959 to 1964. I think this book could be updated or have two more versions that would spotlight the two revivals (1985-1989 and 2002-2003 respectively).
That being said, this is a pretty good companion book. Whether you've seen every episode or have not watched the series at all, it's a great addition. The author has each episode laid out in order with director, writer, Rod's beginning monologue, a description of the episode, and a full review. The book is entirely spoiler free. This means that if you have not watched any episodes at all or only a few, you can still read a good description of each episode without having the twist ending ruined for you. The author pretty accurately lets the reader know which episodes are classics and worth a watch, and which ones fell short.
Overall, an informative read.