Doug and Tony escape the moon only to materialize in an old mine shaft in 1910, the year that Halley's Comet passed very close to earth. Many in town, including prominent scientist Professor Ainsley, believe the comet will smash into the Earth and end all life!

Cast: James Darren, Robert Colbert, Paul Fix, James Westerfield, Whit Bissell, John Zaremba, Wesley Lau, Lee Meriwether, Gregory Morton, Sam Groom, Paul Carr