The Doctor Dances

In the episode, the Ninth Doctor, his companion Rose Tyler, a con man Captain Jack Harkness, and a homeless woman Nancy investigate a spaceship which crashed the same time as patients at a nearby hospital began turning into living dead beings with gas masks for faces.

This episode contains possibly the most obscure nod to the Series wide arc of "Bad Wolf", which comes of the form of the words printed, in German, on the side of a Nazi bomb.

The Ninth Doctor, Rose, and Jack are cornered in a London hospital during the Blitz by patients wearing gas masks fused to their faces asking for their "mummy".

The Doctor, Rose, and Jack investigate the hospital room Jamie was treated at, and learn from recordings that the child is growing stronger, and its powers may become unstoppable.

The Doctor, Rose, and Jack return to the site, and discover the guards' faces transforming into gas mask-wearing people, as the contagion becomes airborne.

The Doctor directs the nanogenes to undo their previous transformations, then orders everyone to flee the area and destroys the medical ship as history recorded.

Steven Moffat acknowledges this mistake in the DVD commentary, but jokingly suggested that an ancestor of Brigadier Lethbridge-Stewart stole the machine from Germany to help with the war effort.

John Barrowman, a Scottish-American actor, was the only one considered for the role, as Julie Gardener was impressed by his performance in a West End musical.

[5] "The Doctor Dances" received overnight ratings of 6.17 million viewers, a 35.9% audience share; this was the lowest figure yet for the series, but it was during a bank holiday weekend and was the most-watched programme on Saturday.

[7] Dek Hogan of Digital Spy disliked Barrowman as Captain Jack,[8] but named the two-part story as the best episodes of the series.

[9] Arnold T Blumburg of Now Playing gave "The Doctor Dances" a grade of A, writing that it "may be the production and plotting high point of the first series to date".

[13] In 2011 before the second half of the sixth series, The Huffington Post labelled "The Empty Child" and "The Doctor Dances" as one of the five essential episodes for new viewers to watch.

The bomb prop, on display at a Doctor Who exhibition