Anne Hegerty, Shaun Wallace and Mark Labbett are embarking on the geekiest road trip ever, to uncover the surprising intelligence of robots.  Travelling across Japan, Anne, Shaun and Mark come face to face with the future of intelligence, from a self-solving puzzle cube and facial recognition technology, to cutting edge robots that are being used in a wide variety of industries.

This week, the Chasers journey to the UK and go head-to-head with child geniuses in order to weigh up to what degree intelligence is innate or can be developed. But, while some of the UK's brightest kids impress Anne, Mark and Shaun, they are shocked to learn that they themselves have something surprising in common, which could unlock the mystery to the trio's amazing memories.

This week, the Chasers journey to America to pit their wits against Kanzi, a Bonobo ape who is able to communicate with humans by using a series of pictures and symbols on a Lexigram, and in addition to this is also thought to be one of the first Apes to show an understanding of spoken English. They also meet a chimpanzee memory wizard, a 25-year-old gamer orang-utan called Katie and that well-known genius of the ocean, the dolphin. And, using their hearts as well as their heads, they will confront the moral challenge: that if humanity fully understood animal intelligence, would we treat them differently?