The novel “Cat’s Cradle: Time’s Crucible” by Marc Platt was published for the first time in 1992. It’s No. 5 in the “New Adventures” range by Virgin Publishing.

Reality seems to be disintegrating around the Seventh Doctor and Ace, to the point that even the Tardis doors seem to be out of place. Something has invaded the Tardis and begun to cause it to disintegrate, affecting everything around it. The Doctor, too, feels the effects of this disintegration on his mind.

On Gallifrey, the first timeship is making an experimental voyage with a crew aboard. The planet’s ruling Pythia has chosen a man as her successor and has secretly included him in the timeship’s crew. However, instead of returning, the ship collides with the Doctor’s Tardis.

The novel “Timewyrm: Revelation” by Paul Cornell was published for the first time in 1991. It’s No. 4 in the “New Adventures” range by Virgin Publishing.

The Seventh Doctor has lost track of the Timewyrm and heads the TARDIS to the village of Cheldon Bonniface, in the late 19th century, where an old acquaintance lives. While the Doctor is playing chess, Ace is attacked by a small astronaut and, fleeing, soon realizes she has ended up on the surface of the Moon, where she suffocates.

Reality also shifts for the Doctor, who realizes that what looked like his friend is actually Hemmings, whom he met in the timeline where the Nazis won World War II. Returning to the TARDIS, he discovers he’s on the Moon in 1992. What’s real?

The novel “Timewyrm: Apocalypse” by Nigel Robinson was published for the first time in 1991. It’s No. 3 in the “New Adventures” range by Virgin Publishing.

The Seventh Doctor finds a new trace of the Timewyrm in the distant future on the planet Kirith. When the Tardis takes him and Ace to Kirith, they find very peaceful, friendly, and beautiful inhabitants. It seems like a utopia, but the two travellers aren’t convinced by what they see.

The Doctor suspects something is wrong and discovers that the locals can live in complete tranquility because the Panjistri take care of them, providing them with all the food they need. The Panjistri are an alien species who, according to the natives, saved them long ago. The Doctor wants to uncover the truth, but is tormented by flashbacks of the Second Doctor.

The novel “Timewyrm: Exodus” by Terrance Dicks was published for the first time in 1991. It’s No. 2 in the “New Adventures” range by Virgin Publishing.

The Seventh Doctor attempts to pinpoint the time period when the entity known as Timewyrm arrived, but it is difficult to obtain a precise result. The TARDIS transports the Doctor and Ace to 1951, to the Festival of Britain in London. The travelers soon realize they have ended up in a London ruled by the Nazis.

The comments Doctor and Ace exchange are overheard by someone who alerts the local authorities, and the two are arrested. They manage to escape, but the TARDIS is no longer where they left it. To understand when history was altered to help Germany win World War II, the Doctor finds himself in the awkward position of collaborating with the Nazis.

The novel “Timewyrm: Genesys” by John Peel was published for the first time in 1991. It’s No. 1 in the “New Adventures” range by Virgin Publishing.

The Seventh Doctor is trying to sort out his memories, but accidentally erases Ace’s. He manages to fix them, more or less, but during the operation, he triggers a message from the Fourth Doctor, who mentions a mythical creature known as the Timewyrm. After the Doctor finishes restoring Ace’s memories, the TARDIS lands in ancient Mesopotamia.

A clash between two spaceships causes damage to both. A woman with cybernetic implants manages to land near the city of Kish. Gilgamesh, the king of Uruk, is trying to spy on his rivals in Kish, and the woman tells him she’s the goddess Ishtar and seeks his help. Gilgamesh refuses, and she vows to take revenge on him by exploiting the inhabitants of Kish and their devotion to Ishtar.