Vicky Pattison and Lucinda Light host a radical new dating experiment as couples face a high-tech lie detector - with £100,000 at stake. The only rule? Do not lie!

A lie shakes one couple, while cracks form in another. A partner swap is a success, but a rash decision brings tears to Truetopia.

The Honesty Box continues to cause chaos for one couple, a shock new arrival turns heads, and trust is more fragile than ever. With secrets still lurking, is another lie about to be exposed?

Some harmless fun among the girls has far-reaching consequences. A newbie tests an existing relationship. And one couple crumble, leaving the entire group reeling from the fallout.

One couple face yet another test, and a bold move is made. New arrivals bring new horizons for some. And as past decisions catch up with the group, tensions are at an all-time high...

The love triangle that has brought chaos to Truetopia culminates in a fiery showdown, while a romantic dinner has a sting in the tail. And a secret pact spirals into something much bigger.

After a shock exit, there's no let-up as the Honesty Box presents some of the toughest questions yet, forcing raw and uncomfortable truths into the spotlight. And one couple seal the deal with a kiss.

Truetopia's final chapter unfolds. Who can prove that their connection is built on strength and authenticity? The pressure's on. The truth has never mattered more.