In most cases, book adaptations tend to be more in-depth than the episode it was adapted from. However, this goes into so much depth that your questions about the episode. For instance, it completely explains the history of the USS Jenolen and its crew, where the Dyson Sphere theory originated from, and who the other person in the transporter buffer was. This book is flawless - a quality I have come to expect from Michael Jan Friedman books.