Tomorrow is Martin Luther King Jr. Day and many of us have the day off. To celebrate, the folks over at Syfy (”the media destination for imagination-based entertainment”) is presenting an 11-hour marathon of the 1960s sci-fi cult TV classic, The Invaders.

And, no, I don’t know what Dr. King and UFOs have to do with one another, either.

Regardless: The Invaders ran for two seasons on ABC from January 10 1967 to March 26 1968 for a total of 43 episodes. The series was executive produced by Quinn Martin (The Fugitive, The F.B.I., The Streets of San Francisco, Cannon and Barnaby Jones) and created by Larry Cohen, a TV scripter who went on to write and direct low-budget feature schlockers like Hell Up in Harlem, It’s Alive and A Return to Salem’s Lot.

For The Invaders, Cohen imagined a scenario that had architect David Vincent stumble upon evidence of an alien invasion of Earth already well underway. Vincent then traveled from town to town (like The Fugitive), trying to expose the alien plot while warning an unbelieving public about the destruction yet to come.

The Invaders starred Roy Thinnes (who actually claimed to have witnessed a UFO during the filming) and he was supported by a variety of the day’s popular character actors as guest stars (Gene Hackman, Roddy McDowall, Peter Graves, Susan Strasberg, Ed Asner, Suzanne Pleshette, Michael Rennie, Arthur Hill, William Windom, Susan Oliver and more).

If you want a peek at some of the sixties sci-fi in store for tomorrow, here’s the main title sequence (what was once called a “premise open”) for The Invaders...