I hope that, with his inside knowledge, we'll be able to piece together the clues to reveal how the criminals work. during those months when you were undercover, were you ever scared? yes, i was terrified of getting caught. it was very stressful psychologically. i decided to stay there just to discover for public about this crime and to help police get evidence. so even though there was a huge expose involving dozens of newspapers around the world, militant group is still operating? yes, they still operating. and they started to make big money. as a student in russia, alex was trained in crypt...