Doctor Who - The Eaters of Light *spoilers*

First off, have to say that it was a big improvement on the previous week's episode. Secondly, that's not a big hoop to have to jump through.

The Doctor, Bill, and Nardole land in Scotland, in the 2nd century. Bill, a history buff when it comes to the 9th Legion of Roman soldiers who were stationed there, has told The Doctor that the soldiers were defeated. The Doctor thinks there's more it. In any case, the 9th Legion (5,000-men strong) was never heard from again.

As Bill goes off to find the soldiers - who should be easy to spot as they march home - The Doctor and Nardole discover the dessicated remains of most of the men.

"What could do that?" Nardole enquires.
The Doctor replies,"The complete and total absence of any kind of sunlight."
"Death by Scotland," muses Nardole.

Though of course there's more to it than the climate of Aberdeen.

Bill stumbles across a handful of the remaining soldiers, who've holed up in a cave, fearing for their lives from whatever's been killing them off. Meanwhile, The Doctor and Nardole encounter the Picts, simple Scottish farmers. Their leader, Kar, takes credit for killing the Roman soldiers. And in a way, she did. She opened a gate to another dimension - one she's supposed to be guarding - to let a "Light Eater" through to attack her hated enemy the Romans. Of course now it's loose in this dimension, unstoppable and getting stronger everytime the sun rises.

Lots of funny dialogue through the ep. like The Doctor revealing that he's lived in Roman Britain before. He's governed, farmed, juggled and was "a former Vestal Virgin Second Class" - which shocks Nardole that he only rose that high.

And there's a surprise for Bill and Nardole when they return to the TARDIS: Missy. The Doctor has brought her onboard to travel with them. Which should be quite interesting because next week's episode not only has the Cybermen but John Simm's Master!