Every country in the Western world has abandoned the use of capital punishment in the name of civilisation and humanity. Yet in the USA, dozens of states and the Federal Government itself continue to execute criminals for certain crimes. Laurie Taylor talks to David Garland about his investigation into the US death penalty and how America has become a peculiar exception in a world which is moving towards abolition. They are joined by former Director of Public Prosecutions, Ken (Lord) MacDonald.