"Boom"

The new Russell T Davies era promises to be different from the first and it has very much fulfilled this promise. He has stamped his authorial authority on this season as he has never done before; except for one slot which he has reserved for his successor. The Steven Moffat episodes were always a highlight in the first RDT era so the first story the former showrunner has written in nearly 7 years is certainly an event.

There are some hallmarks of his style – the ridiculous, yet profound aphorisms ("Everywhere is a beach eventually") the hyper-compressed world-building, tying into the feeling that Moffat is building an enclave Whoniverse of his own (the church militant, Villengard and the holograms of the deceased, which recall the Data Ghosts from the Doctor's adventures in The Library). There is commentary on war, on those that profit by it and the pros and cons of faith. Yet this is anchored by a plot that is simplicity itself – the Doctor is standing on a landmine and has to deactivate it.

Moffat has his own views on who the Doctor is and here we are shown that in the most basic form – the Doctor can solve a crisis standing on one leg. The lines that Moffat writes could have been said by any Doctor, yet Gatwa takes it to another level, showing compassion, fire, authority and humour, with a touch of Kigali patois gilding the Hibernian lily. Millie Gibson complements this powerhouse performance perfectly. The guest cast is small, but impressive, nontheless. Joe Anderson's character is fractured, as of necessity, but the charisma of the character links it all together. However, Oswinning our hearts is the very wonderful début of Varada Sethu and it's good that we shall be seeing more of her. Director Julie Anne Robinson makes this bottle episode a wide-screen visual feast, without losing sight of the eyeball-to-eyeball tension.

Perhaps the only real criticism is that the twist is a bit obvious. But, like Robert Holmes before him, Moffat has crafted a tale that has the quality of his past stories, without seeming like a throwback. Like "Kerblam!" before it, it seems that onomatopoeic explosive titles might be a winner...

NEXT: "73 Yards"

"Space Babies"

If there was any type of story that would be made in the event of  a stereotypical Disney takeover of Doctor Who, it would be one about space babies. What better way to make a family show more kid-friendly than by having the vast majority of the guest cast be talking babies? It does appear that this opening story is a bit too cutesy for its own good which, combined with certain plot points – the constitution of the monster of the week, the propulsion of the space station – seems to indicate that Doctor Who is heading into a more juvenile direction.

However, beneath the juvenile veneer there is some very clever use of the concepts. Digs are made at the recent backsliding in reproductive rights in America, the ethics of commercial interests in healthcare. The production is incredibly detailed, with expansive sets, moody lighting and little details such as the baby scribbles on the walls. The Bogeyman has a perfect blend of the Slitheen's ridiculousness, combined with sinister touches of the Alien and Shin Godzilla. It has to be said, however, that putting CGI lip movements on real babies has never been convincing. With so many of the supporting cast being unable to read their own lines, it is left to the incredibly versatile Golda Rosheuvel to give a great little performance as the nanny. Millie Gibson continues to delight as Ruby, but it is our leading man who transfixes us. It hits the viewer immediately that dialogue about genocide packs an extra punch when delivered by someone with Gatwa's background and the deftness of the writing and the skilfulness of the performance sell this 100%. Director Julie Anne Robinson keeps the sense of fun, whilst maintaining an aura of unease, a very tricky balance that is in line with the tightrope walk of a story that is teetering on the edge of bathos.

RTD has often said that The Ark in Space is his favourite Doctor Who story and, only a few months on from "Wild Blue Yonder", he does another take on it. Yet such is his skill in using the same frame to paint a different picture, that this is all but forgotten. Silly and lightweight on the surface, "Space Babies" has a good deal more to offer. Whilst it is a tale of talking babies, snot-monsters and farting space stations it is a very well-told tale of talking babies, snot-monsters and farting space stations!

NEXT: "The Devil's Chord"