Danny 'Badger' Baxter has a talent for surveillance. But now Badger has a bigger job than photographing dissident Republicans in muddy Ulster fields, or Islamic extremists on rainswept Yorkshire moors. MI6 have a plan to assassinate the Engineer - a brilliant maker of Improvised Explosive Devices, the roadside bombs which account for 80% of British casualties in Iraq and Afghanistan. The spooks know he is planning to leave his home in Iran. They just need to find out when and where he is travelling. So Badger finds himself on the wrong side of the Iranian border...