British couple detained in Afghanistan are released

A British couple who were detained for nearly eight months in Afghanistan are freed. Also on the programme, a new report says the chancellor is gambling on productivity. Are planned public sector savings realistic? We'll discuss rows over free speech in the US with Christiane Amanpour and as MI6 announce that they will use the dark web to attract new recruits, we'll ask a spy thriller writer if espionage is losing some of it's glamour.