Jack meets the world memory champion and a man who can remember every single day of his life. How will Jack's memory fare when he faces the ultimate challenge? And can magician Pete fool us into believing he also has a brilliant memory?

Jack meets a man who is unable to recognise faces - even his own. He tests the skills of a police 'super-recogniser' and puts him to the test. And whilst we may think we're good at remembering faces, magician Pete's tricks make us think twice.

Jack joins two amputees to find out why they still feel sensations in limbs that are no longer there. He tests the world's most advanced bionic hand, whilst magician Pete shows how easily our bodies can fool our brains.

Jack meets a man who has a rare condition where his brain conjures up bizarre hallucinations. We witness a cutting edge surgical eye procedure using bionic lenses. Plus, a series of experiments and magic reveal how much our brains can miss.

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

Jack meets people with synaesthesia and experiences multisensory gastronomy.