The Invaders, the popular 1967-68 Television show, starred Roy Thinnes as architect David Vincent. Late one night, Vincent observes an alien space ship laning in a lonely area. He knows the invaders are here. Now, he must convince a disbelieving world that the aliens not only have come to earth, but have taken human form. They have infiltrated the ranks of government, muilitary, law enforcement, and many other institutions. This book is the first to list every episode in the series, along with story synopses, cast listings, original air dates, directorial credits, and numerous photographs.