David McCallum starred as the "now you see him, now you don't" scientist who used his invisibility to work as a globe-hopping agent for an international trouble-shooting corporation, which in return tried to help McCallum reverse his condition, in this 1975-76 NBC sci-fi/drama series. With Craig Stevens, Melinda Fee. Standard; Soundtrack: English Dolby Digital stereo. 12 episodes, plus the pilot, on 4 discs. 14 hrs.