1. SAS: Who Dares Wins: Weakness
2. Programs from series

The seven remaining recruits compete against each other in the most demanding final phase that the course instructors have ever designed.

The recruits are captured and intensely interrogated in an extreme test of mental resilience, trust and moral judgement.

The recruits race each other across sand dunes in the Sahara and must cross a valley at night while avoiding hunter teams who are tracking them with dogs.

The remaining recruits must abseil 200 feet off a dam and climb a mountain in blistering heat. Do any of them have what it takes to turn adversity into strength?

The recruits face a series of extreme, high-pressure tasks, including jumping from a moving helicopter into a lake and crawling across a vast canyon on a tightrope.

The remaining recruits enter the final stage of the selection and have to endure 24 hours of intense questioning without losing composure or revealing details of their mission. Between interrogations, they are locked in a cell and hooded in stress positions and are subjected to repetitive music at random intervals to maintain a state of severe fatigue.

In this episode, the directing staff test the remaining recruits' resistance to fear, with mind games and an intimidating challenge to dive backwards from a cliff into the freezing sea 12 metres below.

The directing staff have to whittle the group down to the six they think may have what it takes to complete the final stage: a punishing 72-hour cat-and-mouse chase across challenging terrain.

The remaining recruits must choose their weakest colleagues, who then lead the next exercise. And there's the 'Sickener': a series of physical challenges that won't end until five recruits give up.

Selection for the SAS has never been filmed but this series will take you closer than ever before. An elite group of ex-Special Forces soldiers puts 30 physically fit civilians through an extraordinary series of physical and psychological tests, each taken from the real SAS entrance process. In this episode, the recruits arrive at the isolated barracks in Wales and are introduced to their instructors. The recruits' first task is an unexpected one: they are told to write an essay about themselves. Once they've done it, they're immediately off on a 12 kilometre combat fitness test.