Doctor Who: The Eaters of Light (TV) (2017: UK: Colour: 42m) ∗∗∗½ pr. Nikki Wilson; d. Charles Palmer; w. Rona Munro; ph. Mark Waters; m. Murray Gold. Cast: Peter Capaldi, Matt Lucas, Pearl Mackie , Michelle Gomez, Rebecca Benson, Daniel Kerr, Brian Vernel, Rohan Nedd, Ben Hunter, Sam Adewunmi, Billy Matthews, Aaron Phagura, Jocelyn Brassington, Lewis McGowan. A long time ago, the ninth legion of the Roman army vanished into the mists of Scotland. Bill has a theory about what happened, and the Doctor has a time machine. But when they arrive in ancient Aberdeenshire, what they find is a far greater threat than any army. In a cairn, on a hillside, is a doorway leading to the end of the world. Another variant on the ‘monster of the week’ theme, working slightly better than EMPRESS OF MARS thanks to a more polished script from Munro (the only writer from the original series to pen a story since the 2005 relaunch – 1989’s SURVIVAL, the last broadcast story of the original run. What lets the episode down is the variable performances given by the young guest cast, contrasting with the confident ones from the regulars, some dodgy CGI and an overly neat ending. Its familiarity actually makes a welcome break from Moffat’s high concept episodes and is a diverting enough tale.