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?