It was the moment documentary film-maker Sean Langan believed he was about to die.
After being held captive on the Pakistan-Afghanistan border by a group allied to the Taliban for three months, he was travelling to the place where, he had been told, he would finally be released.
The driver pulled over in the darkness of early morning for what his captors said was a toilet stop.
As a door opened, Langan could see, in the side mirror, one of the men accompanying him walking around the car and removing a pistol from the waistband of his trousers.
