From clay tablets in Mesopotamia two and a half thousand years ago to the stuff of dreams today, Sarah Dunant examines the continuing mystery of the function and meaning of dreams.

'As science digs further into every nook and cranny of our brains,' writes Sarah, 'the elusive, individual nature of dreams is possibly the most magical element of human existence that remains.'

Producer: Adele Armstrong
Sound: Peter Bosher
Production coordinator: Gemma Ashman
Editor: Richard Fenton-Smith Show less