"The Well"

When it comes to rating the adversaries that the Doctor has faced this century, the Weeping Angels are usually cited as the most memorable. They were original and terrifying; yet there is a school of thought that has one enemy that is even more so. The status of "Midnight" has waxed inexorably since its airing and the unnamed entity in it was nightmare fuel for a generation. Seventeen years later, it returns – twice as long as the gap between Omega's appearances in the 20th century. Although the modus operadi is different from the first outing, it is still inexplicable, with perhaps no actual consciousness, in spite of its intelligence. You speak, it answers. It knows and understands. And yet it cannot be bargained with or appealed to. It Has No Name, after all. Again, the plan is as simple as a game played by an annoying child – instead of repetition, it's hiding behind someone. Again, the consequences are deadly.

The setting might be the same, but the scenario is different. Basically, it is the Marines in Aliens versus the entity and, as in that film, the characters are vivid, but mostly drawn in thick strokes. However, the actors put their all into the roles, making each character seem real. In particular, there are two guest roles that stand out. Rose Ayling-Ellis gives an appealing performance as Aliss, whilst keeping is wondering whether or not to trust her. Her deafness is used to season, rather than drive the plot, with sign language again being used. The role of the NCO is, however, slightly atypically written, in the form of Shaya Costallion, vividly realised by Caoilfhionn Dunne. Amanda Brotchie puts in her second outstanding stint in the director's chair, making the most of the limited setting. Functional script ideas like the holographic subtitles, become effective displays of world-building in her hands. Crucially, again, this is a terrifying story. Some of the nine-year olds who were hiding behind the sofa when "Midnight" aired, will be joined by nine-year olds of their own. The solution to the crisis is simple, effective and, of course, redolent of David Whitaker's alchemical obsession, sixty years ago!

Gatwa is only required to be more generically Doctorish, but carries that out with aplomb. The single tar is becoming something of a motif for this Doctor, yet it's still effective. Belinda Chandra continues to win all hearts, with a very basic 'battlefield nurse' role being vividly realised by Varada Sethu.

The concepts of "Midnight", that of groupthink and intolerance, are even more relevant now, in this post-lockdown world of sealed echo chambers."The Well” may not have the depth of its predecessor, but that is like comparing Aliens to Alien – lesser, perhaps, than the original, but doing something different, so that it's own qualities make it stand out on its own.

NEXT: "Lucky Day"