‘Doctor Who’ Episode 5 Recap: Bursting the Bubble

Season 1, Episode 5: ‘Dot and Bubble’

We’ve passed the midway point in this season of “Doctor Who,” and the show’s ambition shows no sign of subsiding. After playing with themes of religion and politics, it’s artificial intelligence, already touched on in the earlier episode “Boom,” that’s the topic du jour in “Dot and Bubble.”

With its slick visuals and clear anti-technology viewpoint, Episode 5 has echoes of “Black Mirror,” Charlie Brooker’s dystopian TV anthology — as this season’s showrunner, Russell T Davies, who also wrote the episode, noted in a recent interview.

But whereas Brooker can use each episode of “Black Mirror” to focus on a different aspect of contemporary technology, Davies has just 43 minutes to explore its overarching morality in “Dot and Bubble.”

It makes for a slightly overstuffed episode — critiquing and parodying capitalism, YouTube and celebrity worship — that is saved, in part, by a genuinely unexpected twist in the final act.

As with the previous episode, “73 Yards,” the Doctor doesn’t feature all that heavily in “Dot and Bubble” and the action feels less consequential to the season’s overall arc. Instead, the focus is on Lindy Pepper-Bean (Callie Cooke), a blonde-haired, blue-eyed wannabe vlogger with a penchant for pastels.

Lindy’s life revolves around a two-part technology: Dot, a tiny robotic pearl that hovers in front of her, and Bubble, a virtual sphere of colorful screens beamed around her head. Within the Bubble, the perpetually peppy Lindy is in constant conversation with her friends; she chats away with the cadence — and vocal fry — of a family-friendly YouTuber, and they coo back.