With issue #174, EC Comics veteran Joe Orlando was hired by DC to take over as editor of House of Mystery. As the Comics Code Authority was now being challenged by both DC and Marvel over content restrictions, the series returned to its overt horror themes. The first issue under Orlando would be a reprint issue of old horror/suspense stories, as the new direction would truly begin with #175 (July–August 1968). The issue would introduce a new figure to the series, Cain, the “able care taker” of the House of Mystery who would introduce nearly all stories that would run in the series before its cancellation. Cain would also host the spin-off humor series Plop! and later become a recurring character in Blue Devil and The Sandman.
Artist Bernie Wrightson‘s first professional comic work was the story “The Man Who Murdered Himself” which appeared in issue #179 (March–April 1969)
House of Mystery was in the Dollar Comics format for issues #251 (March–April 1977) to #259 (July–August 1978). House of Mystery featured stories by writers T. Casey Brennan (#260, 267, 268 and 274) and Scott Edelman (#257, 258, 260, 264, 266, 270, 272, 273). Orlando’s tenure as editor ended with #257 (March–April 1978).
EHT Comics 