Second paragraph of third chapter:

The friends shook themselves off, checked for scrapes and bruises, and then turned to thank their saviour. She was slighter in build than the others they had already met, but still manifestly the same species. She gleamed jet black in the half-light, and when she moved, flecks of mica shimmered all over her body.

First (I think) of the new novels featuring the Thirteenth Doctor and the new Team Tardis. This is a well-paced and well-written book that captures the regular characters very well. I was a bit less convinced by the setting - a society of silicon-based creatures living on the inner surface of a cavity inside a planet, which itself is threatened by environmental catastrophe; I think there would be logistical difficulties with some elements of this. But the social and political non-human world is well portrayed, and it is one of those stories that you can imagine would have worked well on screen; as it is, it's a fun read. You can get it here.