The Invaders is a 60’s science fiction series which originally ran for two seasons. The first episode was aired January 10th 1967 and the last, March 26th 1968.
The Invaders is very much a period piece, and reflects the public concerns of the time: Unlike Star Trek, which ran concurrently with it, the Invaders is set in the present.
The Invaders draws influence both from America’s first missions into space which made ordinary people think about the possibility of contact with life from other planets, and also from the paranoia of ‘Reds under the Beds’ brought on at the height of the Cold War.
The Invaders revolves around the character of David Vincent (played by Roy Thinnes), who has discovered that the Earth is being invaded by beings from another planet. These beings have taken human form, and are virtually undetectable from human beings.