We have the concluding story to the penultimate box set of the series, the Doctor and Valarie have infiltrated their way into a religious support group where parents send those who’ve sinned (displayed homosexuality) to confess and receive redemption, and this redemption comes in the form of mechanical suits that will adjust their minds accordingly so they will never commit these acts of heresy again.

This is the first Big Finish story to feature the Cybus Cybermen introduced in Series 2 of Modern Who, complete with the stomping sound effects, the specific voice pattern and even that corny “delete” catchphrase. It’s basically giving the Eleventh Doctor the Cyberman story he should’ve had on TV, it’s amazing to think with all the great episodes of the Eleventh Doctor era, he really drew the short straw with the three main villains of Doctor Who, obviously never getting an encounter with the Master, we’ve already talked about his history with the Daleks and the Cybermen episodes were arguably worse! The less said about James Corden defeating the Cybermen with love the better!

So Sins of the Flesh much like Victory of the Doctor gives us that excellent Cyberman story the Eleventh Doctor deserved, one where they use religion to manipulate those who fear their children’s developing same-sex feelings into giving them those children to “make them better” something that sadly a lot of younger people can recognise. It’s some very heavy-going subject matter that the story manages to carry beautifully and respectfully while still being an entertaining Cyberman story and while the Cybus versions were never my personal favourites, the nostalgic kid inside me did love hearing those familiar sound effects and voicework.

spoilers for the end of Doctor Who series 10

This story takes the subtext of Bill's Cyberman conversion in World Enough and Time/The Doctor Falls and goes "I know writers who use subtext and they're all cowards."

I think this is a good story but holy hell this was a crazy one to listen to right after the gun shot that was the previous one (both stories I listened to at work)

Conversion Therapy

Prerequisites: The previous 11DC audios and Series 7 of New Who.

Sins of the Flesh pleasingly does live up to the hype, and I can confidently say that it's one of the best Cyberman stories I've heard in a long time. On audio specifically, the only story that likely surpasses it is Blood and Steel from the BSNAs, and that boxset is fantastic. Paralleling Cyber-conversion with actual conversion therapy feels like a subject that's both brilliant and obvious, and I'm happy that it was handled so well here. The subject matter is handled with grace, and there's some truly heartbreaking and uncomfortable dialogue sequences here. Of course, it's anything but subtle, but it's not trying to be. The Cybermen are legitimately interesting here, which is something I can't say for the majority of their appearances. This is some great stuff.

I've said before, that for me, the three things that make the cyberman (in theory) my favourite doctor who villains are: Inevitability, Conversion, and Unstoppability.

This story makes use of all three.

The story here, it's revealed eventually, is the result of a single, lone cyberman crashing on a planet, and plotting to take it over through guile rather than force. In Cyberwoman Jack implies that even a single cyberman could be disasterous for humanity, and here we really see that. Intelligence and manipulations aren't often something that's focused on in Cyberman stories, but the way we're shown here how a single one can use a culture that's already forcing repression of some emotions... It's just works. We're also shown that culture, the comparisons between something that's happening here and now to cyber conversion is terrifying, and I think satisfies my inevitability criteria.

As for unstoppability, again, this cyberman crashed, but built itself back up to become a major power in this world. Even a cyberman that's been seemingly defeated will get back up and try again.

But all of this is missing the forest for the trees. What makes this story isn't the cybermen, it's the people and the setting. A conversion camp being a hiding place for the cybermen, cybermen using faith and belief to infiltrate. A lot of the horror, for me at least, of this episode isn't even the cybermen themselves, it's the existential conflict that the people in this camp are going through, the shame in peoples voices as they talk about understanding their sexuality, all watched over by a cyberman telling them that it's okay, they can be freed from those feelings. The fact that even after Valarie shows them what the cybermen are, they all still want to go and be converted because they can't face themselves. Carmen when her emotional inhibitor is turned off, fighting against her dad for what he's turned her into. Conversion.

I also love what this story does for Valarie, after the events of the previous story, a story putting sexuality and beliefs at the forefront just makes sense. And I love how even with the cybermen all focused on what The Doctor's plan is at the end, it's really Valarie that saves the day with her mind and body (literally).

Plus again, I think my favourite part of these stories is that even after the 'story' is over, the conflict is solved, we don't just whizz off in the TARDIS until 'next week'. We're allowed to sit. We see Lilly confronting her family in a scene that reminded me of The Idiot's Lantern, an extremely favourable comparison. We see Valarie talk to The Doctor about how he's been looking at her, and him opening up about Clara and the Ponds. Those character moments where we can just feel the repercussions of what's happened are what makes this series my favourite Eleventh Doctor season.