“The Eaters of Light” (2017-06-17)
The Doctor and Bill, disagreeing about the fate of the Ninth Legion of the Imperial Roman army, travel in the TARDIS to the 2nd century in Scotland. Bill goes her own way, while the Doctor and Nardole look for their bodies. Bill encounters the Legion’s soldiers hiding. The soldiers are hiding from a creature drawn to any light source, killing those in its path. Meanwhile, the Doctor and Nardole discover the corpses of the remaining Legion.
Another simple monster of the week episode. Some creature of the multi-universe just happens to have a portal in Scotland. It all leads up to a rather predictable ending.