A new history of ideas presented by Melvyn Bragg but told in many voices.

Each week Melvyn is joined by four guests with different backgrounds to discuss a really big question. This week he's asking 'What is Justice'?

Helping him answer it are barrister Harry Potter, criminologist David Wilson, philosopher Angie Hobbs and historian Alice Taylor.

For the rest of the week Harry, David, Angie and Alice will take us further into the history of ideas about justice with programmes of their own. Between them they will examine civil disobedience, Kant's theory of Justice, Habeas Corpus and philosopher John Rawls' ideas on how to create a just society.

Producer: Melvin Rickarby.