The Guardian of the Solar System (audio story)

The Guardian of the Solar System was first story of the fifth series in The Companion Chronicles audio range. It was produced by Big Finish Productions. It was written by Simon Guerrier and featured Sara Kingdom.

Publisher's summary
Space Security Agent Sara Kingdom is dead, her ashes strewn on the planet Kembel. But, in an old house in Ely, Sara Kingdom lives on...

Now joined in the house by her confidante Robert, Sara recalls her travels in the TARDIS with the Doctor — and a particular adventure when the ship appeared to land inside a giant clock, where old men are caught in its workings...

And behind this nightmare is an old enemy: Mavic Chen, Guardian of the Solar System.

Then and now, Sara's past is catching up with her. The cogs have come full circle...

The Old Men in the Clock (1)
Robert's voice recalls the events which led him here: how one thousand years ago the house of Ely, capable of granting wishes to its inhabitants, absorbed the spirit of Sara Kingdom so she could have a conscience; how he was sent to judge whether she could be a danger and befriended her; and how, after the disastrous outcome of a terrible war, he accepted to stay in there for life as a price for the life of his terminally ill daughter.

Twenty-one years later, Robert's daughter has left the house to see the world, leaving him alone. He has never seen her again, but he doesn't wish the house to bring her back. The house has also prevented him from aging, so she keeps having someone to care for. Now, Robert has one final wish, but before granting it, Sara wants to tell him one last story about her travels with the Doctor and Steven.

In the past, something attracts the TARDIS to land inside of it. The three travellers come out into a giant machinery, made of various chains and gears. The Doctor, wondering at the sight, recognises it as the inside of an enormous clock, and excitedly urges his companions to go exploring. Sara and Steven complie, albeit with much less enthusiasm. The Doctor describes to them how the clock works, and Steven asks whether it could affect the TARDIS. The Doctor dismisses the idea, but Sara notices the look in his eyes, and states that it did.

The Doctor doesn't replies, his attention drawn elsewhere. In the shadows amongst the chains, the crooks and the notches, there is an old man, dirty with oil and sweat, working at the machine. Sara sees others of them, all along the machinery, all examining and taking care of the chains and the mechanisms. Steven suggests they could explain them what this all means, and the three of them climb to reach them. The old men, though, do not seem to see or hear them, as intents as they are in their toil. They are slaves, Steven says, but a voice behind them contradicts him. It belongs to a young female Space Security Service agent, at whose sight Sara realizes she is back in her own time. They are prisoners, the agent says.

In the present, Robert remarks this doesn't sound too bad, compared to the treatment prisoners endured in the detention prisons of his time. At least, he said, the prisoners in the clock would still be useful to community, as any man should be: after all, everything comes with a price. Sara agrees on that.

In the past, the officer locks the travellers into an accessment cell. While Steven tends to the fatigued Doctor, Sara stands by the door, worrying that the prison guards may find out who they are, kill them and bring the taranium back to Chen. The officer comes back, and takes Sara away in another cell, where a man is waiting: it's Bret Vyon, Sara's brother. Sara hugs him, relieved, while Bret wonders at her presence here: she should be on Venus, he said, on a six-months posting duty. Sara recalls that she was, a year before her meeting with the Doctor and Bret's death, and understands they have travelled back in time. She tries to tell him the reason why she is here, but Bret doesn't believe her, and instead assumes she has been given a secret assignment she can't share with him. Eventually, Sara confirms his assumption, resigning to the fact that she can't change things, and that what will later happen to Bret is already fixed to happen.

In the present, Robert asks her if she really believes that. Sara replies she doesn't know.

In the past, Bret explains to Sara that the slaves are intelligent men, men who ask questions, too smart for their own good. They have been put here, to wonder about the workings of the clock and keep it working, and also to feed it, since the clock, using a technology similar to that of the house, feeds about their thoughts. The only thing Bret can't tell her is the purpose of the clock itself, because he and the other guards have sworn an oath of silence. However, he can bring her to the man who can tell her: Mavic Chen.

Sara is then brought to Chen, who remarks to Sara that the file he is reading on her, penned by Mark Seven, is very impressive, although he, being an android, "lacks the discretion of one of us". Sara is infuriated by his remark, since Mark was one of the best men she ever knew, but she stays silent. Chen asks her what she is doing here where she should be on Venus, and Sara, lying, replies she is here to know about the clock. Chen says the clock is the great secret of the Human Empire, the machine keeping it together. It does not only measure time, it dictates it: the swing of the pendulum causes space-time to bend, and thus serves as a counterweight to great avenues into hyperspace, thus allowing space travels to be swift and rapid. Otherwise, the Earth Empire would collapse, unable to stay united in its vast extension. Chen says he inherited the secret from the previous Guardians, but he doesn't like it: exploiting the old men is wrong, and people would not approve should they know. For that reason, he is looking for something to replace the clock. He then asks Sara what would she would have him do, now she knows, leaving her uncertain what to answer.

In the present, Robert insists that she grants him his wish. He has been trapped by her, like the old men were trapped in the machine, and the story is only delaying his freedom. Sara finally agrees. Robert dies, and his mind becomes the new identity of the house's conscience, while Sara comes back to life, looking older than she was. Now she is free to leave the house, while Robert can stay forever in the house and tests his power, as he always wished to do. Glad and delighted, Sara leaves.

The Guardian of the Solar System (2)
to be added

Cast

 * Sara Kingdom - Jean Marsh
 * Robert - Niall MacGregor

Continuity

 * Robert once again relates the story of the Doctor, Steven and Sara's first visit to the intelligent house in Ely a thousand years earlier. (AUDIO: Home Truths)
 * Robert recalls agreeing to remain in the house forever in exchange for his daughter's life. (AUDIO: The Drowned World)
 * Sara recalls that she was sent to arrest the Doctor after he stole an emm of taranium from Mavic Chen, that her brother Bret was aware that he had allied himself with the Daleks, and that she killed him under orders of Mavic Chen. (TV: The Daleks' Master Plan)
 * Sara also refers to her unwilling involvement in the experiment with molecular dissemination, which sent her, the Doctor and Steven to Mira, where they mett the Visians, an invisible, predatory species, and she saw Chen's betrayal. This persuaded her to help the Doctor and Steven, thus leading to their escape with the taranium. (TV: The Daleks' Master Plan)
 * Sara refers to her visits to Liverpool (before it was flooded) on 25 December 1965 (TV: The Daleks' Master Plan) and Mars before it was colonised by humanity. (PROSE: The Little Drummer Boy) She also mentions an "ancient right gold cricket", of uncertain reference.
 * Sara previously told Robert that she encountered a withered old man who was trapped in the workings of a clock. (AUDIO: Home Truths, The Drowned World)
 * Mavic Chen is reading the report Mark Seven filed of the encounter he, Sara and Jason Corey had with the Daleks on M5 many years earlier. (AUDIO: The Destroyers)
 * Sara refers to Robert's attempt to record her voice on a wax cylinder more than 20 years earlier. (AUDIO: The Drowned World)
 * Sara mentions that the Doctor and Steven first met Mavic Chen and Bret on Kembel in 4000. (TV: The Daleks' Master Plan)
 * Many years later, Sara would be reunited with the Doctor, by then in his fifth incarnation, and Steven in an alternative Death Zone on Gallifrey. (AUDIO: The Five Companions)
 * The Eighth Doctor and Charley Pollard would later visit the inner workings of another giant clock in Caerdroia in the Divergent Universe. (AUDIO: Caerdroia)