Browse all 10 episodes in this season, including available images, air dates, runtimes, ratings and episode summaries from TMDB.

Episode 1
Jack meets the world memory champion and a man who can remember every day of his life.

Episode 2
Jack meets a man who is unable to recognise faces and puts a super-recogniser to the test.

Episode 3
Jack joins amputees trying to find out why they feel sensations in their missing limbs.

Episode 4
Jack meets a man who has bizarre hallucinations and witnesses cutting edge surgery.

Episode 5
Jack meets a woman who has lost all sense of time and reveals how time can be elastic.

Episode 6
Jack meets people with synaesthesia and experiences multisensory gastronomy.

Episode 7
Wim Hof teaches Jack how to control his pain and plunge into the ice cold sea.

Episode 8
Jack meets a man with Sudden Artistic Output syndrome and unleashes his creativity.

Episode 9
Jack meets two people who can’t stop falling asleep and finds out the consequences of sleep deprivation.

Episode 10
Jack meets a British man who awoke from a coma speaking only fluent French.