Writer George R.R. Martin: ‘It was so vivid I knew I had to write it.’

The writer George R.R. Martin discusses with Mark Lawson on Front Row his bestselling fantasy series A Song of Ice and Fire and how the idea came to him with the unearthly phrase ‘the summer snows’. He reveals how eagle-eyed fans have spotted small continuity errors amid the thousands of pages and how he’s managed to smooth these over with a few clever tricks.