The story of how Dr William Key and his super smart horse “Beautiful” Jim Key became one of the biggest acts in America, only to disappear into historical obscurity. But not before they made a profound impact on millions of American children, who pledged to always be kind to animals, as a result of witnessing their extraordinary partnership.

Dr William Key was a former enslaved man who became a wealthy entrepreneur before turning his hand to patiently training a sickly foal to do maths and spell. They took their act on the road to the delight of millions of Americans and the attention of the American humane movement.

Matthew Syed invites us to dive into this extraordinary story of America in a moment of new understanding, and asks us to consider the possibilities offered by our relationship to animals.

With Mim Eichler Rivas, Eric Collins, Dr Bill Samuels, Dr Elizabeth Ormerod

Presenter: Matthew Syed Producer and Series Editor: Katherine Godfrey Sound Design and Mix: Rob Speight Theme tune by Ioana Selaru A Novel production for BBC Radio 4