The five teams head out of Delphi to their next checkpoint - Baku, the capital of Azerbaijan - a journey that sees them leave behind the familiarity of the west.
As five teams become four, they are more focused than ever on reaching Singapore. They journey across the deserts, mountains and Silk Road cities of Central Asia to Uzbekistan.
The four remaining teams enter the People's Republic of China. After nearly a month on the road together, budgets are running low and emotions are high.
After 12,000 miles, two continents, 21 countries and four seas, the finish line is in sight as the four teams complete the final leg of the Race Across the World.
Five teams set off from Mexico City - a gargantuan metropolis and the largest Spanish speaking city in the world - in a race to reach the most southerly city in the world, Ushuaia in Argentina.
The teams head out of Copan Ruinas in western Honduras to their next checkpoint, Panama City. Having raced hard in the previous leg, leaders Jo and Sam are keen to experience more this time.
Setting off from Panama City, the remaining four teams take to the Caribbean Sea, but there are complications when a state of emergency is declared in the destination of their next checkpoint.
With a cinema reward on offer, tribemates give it their all at the Reward Challenge. And with fiercely strong alliances refusing to budge, a Survivor first is on the cards with rocks at play.
With the threat looming of making it to the end with no big moves on their resume, a player works hard to warn the soldiers it's now or never to take out a big dog.
Emotions are high as the tribe continue to target the returnees. When an uncertain advantage is brought out at Tribal Council, a scramble causes carnage in its wake.
Tensions peak as shifting alliances, bold moves and rising rivalries reshape the tribe. Power balances wobble and players scramble to outmanoeuvre each other in a fast changing game.
New players rally to challenge a returnee's power, but messy moves and rising tension spark chaos as shifting plans lead to an explosive Tribal Council.
Players hit Merge with individual stakes rising. A car reward, shifting loyalties, and new alliances shape the first post-merge vote as the game opens up and tensions sharpen.
With rewards on offer, tribes face a challenge of deception to get what they want. And a beast of the game shows just how bold their bluff is, as a blindside gets underway.
Two individual immunity necklaces are up for grabs as players fight to stay in the game with both tribes at Tribal Council. And a player on the bottom fights for their place, refusing to take orders.
Claudia Winkleman greets 22 strangers as they arrive at a beautiful castle in the Scottish Highlands to play the ultimate reality game of detection, backstabbing & trust, hoping to win up to Β£120,000.
The ultimate reality game of detection, backstabbing and trust, suddenly becomes very real for the players as it's revealed who has been murdered by The Traitors - leaving the Faithful reeling.
The drama continues, there's tears & anger during breakfast as the news of the second faithful to be murdered in the night by The Traitors. Another player being banished are they a Traitor or Faithful
Players must put their differences aside as they face another Mission - they are given a chance to add Β£10,000 to the prize pot. At the Round table one player has a difficult decision to make.
The drama continues, tempers around the round table are more frayed than ever, a player is sent home. The Traitors set to murder again, the Faithful are even more determined to catch them in the act.
With the stakes getting higher and the Faithful feeling like they are on the backfoot, can they change the course of the game, and put the traitors under fire?
The ultimate psychological reality show continues. After a shock banishment set the castle into a spin, The Traitors were given a chance to strengthen - but will their plan be successful?
The players past the halfway mark, breakfast isn't without its usual trepidation, as the faithful nervously wait to see who the Traitors murdered overnight. But thatβs not the only news this morning.
With Tensions rising, last nightβs party games have left the players with more than just a hangover. One player regretting their actions & relationships tested, accusations quickly start to fly.
As the ultimate psychological reality show continues, and the number of players keeps on dwindling, another Faithful doesn't make it to breakfast - but who has been murdered?