American Hangman is a thriller built around a relentlessly ticking clock and a rapidly approaching deadline and verdict. A kidnapping, broadcast live on social media, turns into the trial of a judge who presided over a botched criminal case. This time, however, the audience gets to play judge and jury, deciding if the judge himself gets to live or die.
This episode looks at the issues that will change the way we live our lives in the future. Rather than relying on the minds of science fiction writers, mathematician Hannah Fry delves into the data we have today to provide an evidence-based vision of tomorrow. With the help of the BBC's science experts - and a few surprise guests - Hannah investigates the questions the British public want answered about the future.