Open House: The Great Sex Experiment

In this episode, builder Connor and full-time mother Kirstie are interested in bringing another man into their relationship and want to start the process by having a threesome. However, after connecting with resident Nathan, things go off the rails due to Connor's confidence issues. Meanwhile, married parents Chanice and Richardo, who are torn between a threesome or foursome, face an unexpected issue - finding a resident who is attracted to them.

Natalie and Tom are left questioning everything after some steamy intimacy with Josh and Holly in the hot tub, while Chanice and Richardo invite 15 of the residents for an orgy.

Married parents Tom and Kirsty check in to fulfil Tom's fantasy of experimenting with another man. Natalie and Tom explore a threesome with Precious, but will insecurities get in the way?

Naturist-loving Jess and Ben explore a non-monogamous lifestyle in the hot tub with Olivia and Gage, where Jess faces a big fear. Kirsty and Tom consider attending a huge orgy.

Chelsea and George seek out a threesome with a woman, but will it help Chelsea move past George's sexually adventurous past and infidelity? Jess and Ben host a naked dinner party.

Brendon and Priya want to explore Priya's bisexuality... will her steamy hot tub and sensual time in the bedroom hit the spot? Chelsea and George disagree over how far they should take things.

Nicolle and Ben spice things up with Kiki and Sophia, but is Nicolle as happy with the night's climax as she appears? Thrill-seekers Katey and Dan arrive to pursue a live sex show experience.

Katey and Dan plan a night of fun with residents Josh and Holly, while Nicolle and Ben take the next step into non-monogamy and try a couple swap. Can Nicolle overcome her anxiety and insecurities?

Open House is back with a bang, with a sexy gang of new residents and a new open relationship expert. Mark and Tanith from Yorkshire want to find out if having sex with other people can help build trust, which has been under threat due to Mark's past cheating. Married couple Chloe and Paul from Liverpool are childhood sweethearts who've never had sex with anyone except each other. Now they want to see if an open relationship can allow Chloe to explore whether she might also be attracted to women. But how will Paul react if she is? 

The series where committed couples explore whether having open relationships and sex with other people can strengthen their bond. Welsh couple Jonny and Sarah have been trying to open up for two years but keep bottling out at the last minute. Will they be able to overcome their nerves and how will Jonny feel if he needs to share Sarah with another man? Tanith and Paul have to confront the fact that their partners Mark and Chloe had sex with multiple people on their first night at the retreat while they went back to their bedrooms alone. Will they be able to partake in sex with their partners and other people on their second night?