For over fifteen years the crew of Kollo-Zarnista Mining Facility 27 has been extracting diamonds from deep within the atmosphere of Saturn, diamonds that help to fund the ever-expanding Human Empire. But when a mining operation goes wrong, a rescue mission must be launched to save a worker lost overboard, a worker who claims that he has seen something amongst the swirling clouds. Something that can't possibly exist.
When the Doctor and Bill arrive, they immediately find themselves caught between hostile miners, suspicious security guards and corrupt company officials as they face accusations of sabotage and diamond theft.
And below them, in the crushing atmosphere of the gas giant, something is starting to rise.
to be added
- Twelfth Doctor
- Bill Potts
- Laura Palmer
- Frank Gammadoni
- Jenny Flowers
- Jorgen Delitsky
- Donald Nettleman
- Clive Rince
- Claire Robbins
- Roger Baines
- Gerry Tobins
- Jo Teske
- Lynne Harrison
- Laura Palmer once dealt with an Ogron incursion into Galactic Federation space.
- The Cancri are at war with the Ba-El Cratt.
- The Ba-El Cratt claim asylum on Kollo-Zarnista.
- Laura graduated at the Federation Academy with Honours. Following this, she requested assignment to Kollo-Zarnista Mining Facility 27.
- Frank worked on the reconstruction of the Titan refuelling platform after the great fire of 5012.
- Nettleman lost money at the Olympus Mons Casino.
- Derek once argued with the Doctor during his lecture about cyclical time.
- Bill recalls being impressed when she visited St Luke's server room.
- Frank has a Datapad on his office.
- The mining facility uses Security Orbs. The security personnel also use g-Tasers.
- The Doctor picks up a subspace tracking device in the TARDIS.
- Alaskan Eskimos on Earth made their boats from whalebone.
Kollo-Zarnista Mining Facility
- There is a vault in the upper level of the mining facility, in which diamonds are stored.
- Kollo-Zarnista possesses at least two mining bells. When the primary bell is damaged, the secondary bell is calibrated in order to replace it.
- Nettleman summons Delitsky, Laura and Jenloz to the meeting room.
- Jo takes the Ba-El Cratt in Baines' suit to the medical bay.
- Bill notes that the Kollo-Zarnista canteen looks just like the one she works in.
- Delitsky works in the Kollo-Zarnista control centre.
- Claire ponders that the only way to stop the Ba-El Cratt would be to Purge the mining bell.
- Delitsky's crew move the TARDIS to the equipment bay following the Doctor's rescue of the Ba-El Cratt inside Baines’s suit.
Planets and moons
- By the 51st century, there are no precious metals left on Earth.
- Cygnus A and Varos are penal colonies where prisoners dig ore.
- There are shipyards on Mars and Ganymede.
Food and beverages
- Bill drinks hot chocolate.
- The Doctor attempts to invoke Article 15 of the Shadow Proclamation, but it's interrupted before he can finish the word "Proclamation".
- Although there are references to the events of Smile and Thin Ice, this novel was released before the episodes aired.
- Laura worries that the diamond shipments could attract the attention of criminals such as Rohm-Dutt (TV: The Power of Kroll) or Sharaz Jek. (TV: The Caves of Androzani)
- Bill recalls meeting emoticon robots on a distant planet (TV: Smile) and nearly being eaten by an alien fish on Victorian London. (TV: Thin Ice)
- The Doctor recalls he recently shot a friend of his on Gallifrey. (TV: Hell Bent)
- Bill compares the TARDIS to a kitchen (TV: The Pilot) and the Doctor running to "a penguin with its arse on fire". (TV: The Pilot, Smile)
- Jo's older sister worked with Professor Frederick Marius. (TV: The Invisible Enemy)
- Bill dreams of sinuous shapes with gnashing teeth beneath ice, (TV: Thin Ice) robots with smiley faces, (TV: Smile) alien war machines, and Heather staring into her eyes. (TV: The Pilot)
- Delitsky jokingly asks Claire if she could see him cutting down trees on Androzani Major. (TV: The Caves of Androzani, The Doctor, the Widow and the Wardrobe)
- Nettleman knows that attempting to defraud a Federation-backed diamond franchise could lead to him spending his life digging ore on Cygnus A or Varos. (TV: Planet of Evil, Vengeance on Varos)
Additional cover images
Editions published outside Britain
- Published in Italy by Armenia in 2017 as a paperback edition.