New couples move into the Open House. Chloe and Mark, who've only ever had sex with each other, open their relationship up to see if Chloe's attracted to women.

Jonny and Sarah have been trying to open up for two years but keep bottling it... can they finally overcome their nerves? And will Mark and Chloe's partners - Tanith and Paul - partake with others?

Claude and Amy want to form sexual and emotional relationships with multiple partners, but can Claude overcome his guilt issues? Jonny and Sarah have fallen for French lingerie model Marie

The retreat's first gay couple, Chris and Simon, want to explore whether or not Simon is bisexual before they tie the knot. And will an orgy help Tom overcome his concerns?

Liam and Stacey want to fulfill Liam's fantasy of watching Stacey have sex with another man. Will the reality measure up? Alex and Lydie want to spice things up, but can they agree on their boundaries?

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.

Tom and Lauren want to open up their relationship, but will Tom's stage fright stop him rising to the occasion? Alex's confidence is rattled after watching Alana have wild sex with resident Georgie.

Helen and Steve want to inject some romance into their relationship... can the retreat fulfil their desires? Are Caius and Eli prepared for the reality of a threesome?

Married couple Al and Jasmine have dabbled in sex parties before, but now want to take things further. Alex and Lydie want to push their boundaries even more...

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.

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.

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?

Sharmayne and Jamie have little sexual experience with others. Can a high-energy social ease them into opening up? Plus: hot tubs and hesitation for Simon and Chris.