Who will be on top in the world of future crime - the cops or the criminals? How will crime change and what can be done to prevent it in future? Presenters Timandra Harkness and Leo Johnson explore how crime and punishment will change in the 21st century. They discover how crime and technology combine to create a toxic mix of threats and vulnerabilities in the next few decades. As criminals swiftly adopt and adapt emerging technologies to enable them to stay one step ahead of anyone trying to combat crime, the programme examines what kind of crimes this might lead to, and how it might be possible to stop offenders in future. New technology also holds out the prospect of radically different kinds of punishment, as well as significant developments in the understanding of how and why crime happens. Producer: Jonathan Brunert.