Madquake (audio story)

 was the second of two stories comprising the two hundred and sixty-seventh release of Big Finish's monthly range. It was written by Guy Adams and featured Sarah Sutton as Nyssa, Janet Fielding as Tegan Jovanka and George Watkins as Marc.

Publisher's summary
Abandoned on the planet Callanna, Nyssa, Tegan and Marc take advantage of its therapeutic atmosphere to come to terms with recent events; but others seek to take advantage too. The Slitheen are on their way – and they're ready to sell this world to the highest bidder!

Part 1
Nyssa and Tegan are stargazing on Callanna when Tegan realises how uncharacteristically relaxed she is, suspecting the planet of affecting her somehow. Nyssa, however, has no such complaints and says to herself that she hopes the Doctor never comes back.

Marc is dwelling on his partial cyber-conversion and wishing that the Cybermen had just killed him when he overhears Nyssa and Tegan arguing, for Nyssa apologises and explains what happened on Deva Loka. Tegan visits Mison and his therapist, Professor Cott, who is trying to isolate the planet's calming effects. Marc accidentally hurts Nyssa when she tries to touch him and lies on a riverbed for two hours in the hopes of finding some peace. Underwater, he senses something approaching.

Tegan wakes Mison from a nightmare of his wartime experiences and he tells her of how the planet helps him deal with his trauma, as well as how helpful it could be for Marc.

Marc finishes a run and is told by Professor Cott that he had reached around 100 kilometres per hour. Nyssa and Tegan hear something enter the atmosphere and discuss the Doctor, with Nyssa thinking that the Doctor left them behind because of his guilt and that he would return. Marc discusses him with Professor Cott, who attempts to excuse him by saying that he too was hurting, before suddenly feeling the atmosphere being stolen from the planet.

Nyssa, Tegan and Mison go looking for Marc and Professor Cott as the planet trembles. Professor Cott tells Marc to calm down and that they should stick together because she recognises the approaching ship. Nyssa, Tegan and Mison find them and realise that something is wrong with Professor Cott's voice. She tells them to run as the newcomers are Slitheen, just as she is.

Part 2
To be continued.

Cast

 * Nyssa - Sarah Sutton
 * Tegan Jovanka - Janet Fielding
 * Marc - George Watkins
 * Professor Cott - Kate Isitt
 * Mison - Raj Ghatak
 * Bella - Dona Croll
 * Grumma - Harley Viveash
 * Robot soldiers - Jacob Dudman
 * The Doctor - Peter Davison

Continuity

 * Tegan and Nyssa mention their adventure on Deva Loka and Tegan being controlled by the Mara. (TV: Kinda)
 * Marc thinks about his conversion. (AUDIO: Warzone, Conversion)