Published by Gold Key Comics, Boris Karloff Tales of Mystery ran from 1963 to 1980. The first few issues contained stories based on episodes of the Boris Karloff-hosted anthology series, Thriller, but later issues featured original tales of horror, science fiction, and mystery, all of which were introduced by a comic book version of Boris Karloff. Today, to help us celebrate Halloween, here is a sampling of the covers of Boris Karloff Tales of Mystery!