Four years before Jack Kirby and Stan Lee created Marvel's Fantastic Four, there was another adventurous foursome co-created by Kirby that set fourth to challenge the unknown. Now witness those early adventures again in a specially priced hardcover volume that collects SHOWCASE #6, 7, 11, and 12, and CHALLENGERS OF THE UNKNOWN #1 and 2, originally published in 1957-1958. For more information, see the feature article.
