Spoilers ahead! I’m not writing out the whole plot because it’s too complicated and would really ruin some of the surprises.
While traveling, a mysterious force hits the TARDIS and pulls Nyssa and Turlough out. When the Doctor and Tegan trace back to where it happened, they land in 51st century Brisbane, but Nyssa and Turlough are nowhere to be found. They discover that the area has been destroyed and is considered extremely dangerous, and the people they meet up – a group of journalists with know them. They become embroiled in the problem that the journalists are investigating – what seems to be unethical experiments in time travel – that are occurring just as the world factions are coming together to form a globe-spanning alliance. As they find out more about this new alliance, they discover that the man who is leading the faction known as the Eastern States, Magnus Greel, is also about to get married – to Nyssa. The story is then all about figuring out what Nyssa is doing there, what’s going on with the time travel experiments, and trying to get the alliance to not dissolve into war.
Like I said, I’m not going to give many more details about the story, but if you’re familiar with the classic show, you probably recognize the name Magnus Greel: he was the villain in the Fourth Doctor episode “The Talons of Weng-Chiang.” In that episode, the Doctor encounters Greel in Victorian London, where he’s been deformed and is dying from his travel in his time cabinet, which uses a destructive form of time travel called zygma energy. Assisted by a duped minion and a doll-like animated object called the Peking homunculus, he was draining the life force of kidnapped women to stay alive and power his experiments to heal himself using the time cabinet. The Doctor, of course, stopped him by forcing him into his own life-drain chamber.
This audio, then, explores Greel’s life before the events of “The Talons of Weng-Chiang.” He’s a high government official in the Eastern States and wants to have his faction take over the world (even if it means World War Six), but he’s also dabbling in time travel on the side, through the efforts of an alien named Findecker, who insists that zygma energy is the way to do it. Findecker is dying from zygma energy exposure, so Greel also starts experimenting with draining life force from people, earning him the nickname “the Butcher of Brisbane.” The TARDIS crew become involved because of the zygma beam hitting the TARDIS in mid-flight, and the Doctor finds himself having to figure out what’s going on and try to help the victims of Greel’s and Findecker’s experiments without changing the history he’s already experienced with Greel in his previous incarnation.
Thus, the story has to work on two levels: it has to be a good story in its own right, and it has to fit itself into the history already established in “The Talons of Weng-Chiang.” It does both of these beautifully, and it’s quite a thrill to hear about how all of the things in that episode came to be. The origin of the time cabinet and the Peking homunculus are explained, and the Doctor mentions that he exists elsewhere on the planet, working with the Filipino army in a previous incarnation. The Doctor even introduces himself to Greel as a Time Agent, explaining why Greel is so afraid of them in the TV episode.
Greel himself is a fascinating character. He’s ambitious and amoral, but he is still a likable person (unlike Findecker), and even though you can’t believe it at first, he really does love Nyssa. And, after all that happens, you can see why he’s become what he is in “The Talons of Weng-Chiang.” The Doctor wins and everything is happy again in the end, but the story feels like a tragedy because of Greel and what you know of his fate.
This story is also unique because the Doctor has to constantly dance around the fact that he knows Greel’s future and has to make sure that things happen correctly for him. For example, there are a few instances in which people have to chance to kill Greel or take him prisoner, but the Doctor knows he has to live and has to escape in his time cabinet. There’s no external, hand-wavy reason for what the Doctor has to ensure, like “it’s a fixed point in time.” This time the reasoning is very solid: the Doctor must save everyone while allowing Greel to escape, because not doing so will change his (the Doctor’s) personal timeline.
All in all, this is a great audio, especially if you’re familiar with “The Talons of Weng-Chiang.” I leave you today with the best quote from story, courtesy of Tegan, speaking to the Doctor. “Stop holding time’s hand! It’s bigger than you are. It can take care of itself.”