Ah, for the good old days of rampant paranoia. This show's silly two dimensional world view, coupled with a modest production budget, left the screenwriters little to work with each week, the plots basically revolving around two or three predictable situations, to bring the audience to a peak of breathless anxiety. Richard Carlson was earnest and workmanlike as was the overall feel of the series. 'Secret' meetings on park benches, 'secret' notes folded into newspapers, microfilm, typewritten code, 'hide-in-plain-sight' signals, droning narration and an iconic theme. Although it seems to still appeal to the political fringe today, it is nevertheless, a true artifact of the fifties. Not to be missed. Somewhere John Foster Dulles is smiling.