Written by ROBERT KANIGHER, BOB HANEY and others • Art by RUSS HEATH, IRV NOVICK, GENE COLAN and others • Cover by RUSS HEATH

In these stories from SHOWCASE #27-29 and SEA DEVILS #1-16, the Sea Devils battle creatures beneath the waves including The Octopus-Man, the Undersea Ghost, The Flame-Headed Watchman and more.