The assistant director, David Tomblin, was producer on "The Prisoner." He wrote three episodes, including the first, and directed two. He also directed episodes of "UFO" and "Space: 1999." For most of his nearly 50-year career he worked as assistant director or second-unit director. His feature credits included "Barry Lyndon," "Superman," "The Empire Strikes Back," the Indiana Jones films, "Out of Africa," "Chaplin," "Braveheart," and many, many more.
Link to the book:
The Invisible Man S1 Ep02 - Crisis In The Desert