Outlander and Poldark stars in shocking The Couple Next Door trailer

Then, as seen in the trailer, one night the couples become unexpectedly sexually entangled, in a way that changes their lives forever.

Meanwhile, there's also something going on with a very creepy Hugh Dennis, although how he factors in we don't yet know...

Check out the shocking first trailer right here.

Heughan previously teased the "fantastic" new series, saying: "It’s called The Couple Next Door, based on a Dutch book and TV show about a couple that move to a new neighbourhood and meet their neighbours… who happen to be swingers! And everything that ensues there."

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We see a shot of Enoch's Pete holding a gun in the clip - so whatever does ensue, it certainly seems to be a dramatic escalation.

The show has been described as a "deliciously dark, psychological drama, exploring the claustrophobia of suburbia and the fallout of chasing your deepest desires", as well as an "addictive, emotional roller coaster".

Heughan is, of course, best known for his role as Jamie in Outlander, the romantic fantasy series which will soon be coming to an end.

He said of leaving behind his character: "It’s been such a crazy, incredible, rewarding journey. Ten years, seven seasons in, and we’re going to do one more eventually.

"But I think we’re coming to realise we’re towards the end, and that it’s going to be quite a life-changing moment.

"The show has been my life for a long time. I’ve made friends, we’re basically a family, and it’s going to be very odd not to see everyone again.

"When we finished series seven, we all realised that was the last but one. And you could feel it… There’s going to be a lot of sadness."

The Couple Next Door airs on Channel 4 in the UK later this year and on STARZ in the US in 2024. If you're looking for more to watch, check out our TV Guide and Streaming Guide or visit our Drama hub for more news and features.

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