Oliver Blagden speaks with Amy Staniforth and Stuart Pryke, co-authors of the new bestselling 'Ready to Teach Macbeth: A Compendium of Subject Knowledge, Resources and Pedagogy' - a must-own for any English department teaching this Shakespeare text.  Stuart and Amy discuss what compelled them to write the book, how they approached their research, and why it is that modern audiences keep returning to 'The Scottish Play.'