1970s sci-fi adventure, inspired by the H.G. Wells story The Invisible Man. It starred David McCallum as Dr. Daniel Westin, who after finding out that his experiments into invisiblity were going to be used for military purposes, he destroys his lab and records - leaving him permanantly invisible and on the run. / After the first season ended, everything but the invisibility concept of the show was completely changed and the second season then became The Gemini Man. /