Late one January evening, we set off. The car had been rented and we had the slave locked up. On his collar he went, dragged through the streets of London. And then we bundled him into the car. He proved to be a good by whilst on the leash and restrained. But when it came to keeping him in situ, he seemed to want to escape. The drivers hand and arm, adorned in studded leather, reaches across to grab the face of the passenger...