Intro: Tonight begins the greatest treasure hunt in the history of the universe as The Doctor and K-9 embark on a quest to find the segments of the key to time. They are not only well hidden and light years apart, but so well guarded as to pose a dire threat to even a Time Lord with the acumen and resourcefulness of The Doctor. The greatest journey, the Chinese say, begins with the first step. We take that perilous step tonight in "The Ribos Operation."

Outro: "All that glisters is not gold" quoted The Bard, which is another way of saying "Thing's ain't always what they seem to be." The Doctor and Romana will find that to be true, much to their consternation as the search for the second part of The Key to Time leads them to "The Pirate Planet," next Sunday night at 11. [source: ChicagoEpguides]