Written by DAVE WOOD and JACK KIRBY • Art by JACK KIRBY, WALLACE WOOD, MARVIN STEIN and others • Cover by JACK KIRBY

Now in one amazing volume collecting SHOWCASE 6, 7, 11 and 12 and CHALLENGERS OF THE UNKNOWN #1-8, these are the original 1950s tales of four death defying adventurers and their incredible exploits.