I don't usually find unauthorized companions, compendiums or biographies very useful as, most often than not, they only want to cash in on something rather than truly inform the reader. Here, Ted Edwards has actually done his research, interviewed most of the writers, producers and directors, and has managed to put together something that is not only entertaining, but has actually told me things I did not previously know about a show I have followed pretty closely. I ignored this book when it first came out but I will probably hunt it down and add it to my reference collection. Worth a look for fans of the show!