Fascinating--this is what is behind the entire idea of THE PRISONER. Can you retire from this job???
Also, another episode on the disc, "To Our Best Friend," has a Russian spy infiltrate a British agent and marry him, years before he is actually important. They conclude that she stayed for five years at some kind of village in Russia that was completely made up and immersed in an English lifestyle and culture in order to acclimate her to the job.