Doctor Who: The Fourth Doctor Adventures Series 15: A New Occupation (15C)

Time travel. The Doctor is well aware of its dangers.

But even the most well-meaning Time Lord can't guarantee something somewhere won't nudge it off track. And then history itself might be at stake…

15.6 Daughter of Destruction by Katharine Armitage
The TARDIS lands in the city of Ongud during a rebellion. The world is suffering the wrath of Genghis Khan and the Doctor and Sarah are right in the middle of it.

It's a dangerous time, but one woman is about to stand up to the despot for the first time. His anger is about to be halted.

Unless someone has made a very small mistake…

15.7 A New Occupation by Helen Goldwyn
Temporal disruption on Jersey leads to a new kind of time travel for the Doctor, Sarah and Harry and they soon find themselves on the island during its occupation by the Nazis.

Can they return to the future without a TARDIS? And without the German forces changing history irrevocably?