Pretty unusual to out an mi5 guy. I would feel sorry for him as well as her. Leading a life of deceit is no kind of life. I wonder if his boss caught Mr. Stone making up stuff, or maybe the problem was there was so much good intel they couldn’t believe it. Now she and her friends are totally exposed. He did to good a job. They have files on everyone from the lowest to the highest in the network. Hundreds perhaps thousands of people.