Feature Comics #56

When sabotage strikes a U.S. Navy base at San Diego, Zero—the Ghost Detective—springs into action to uncover the mystery behind the burning ships. A ghostly saboteur with a vendetta against America emerges from the waters, and Zero must track down this spectral enemy before more vessels fall prey to his destructive scheme. By Noel Fowler, "Spectre at Sea" blends wartime intrigue with supernatural detection in this five-page tale of danger and duty.

Captain Bruce Blackburn, ace of military intelligence, crashes his plane on a mysterious island while pursuing Japanese spy Katsu Togo—only to discover the enemy is already operating a submarine in the area, plotting an attack on an Allied troop ship. Stranded and outnumbered, Bruce must use his wits to sabotage the sub from within before it can complete its deadly mission. A high-stakes wartime thriller where one man's ingenuity becomes the boomerang that returns the enemy's own weapon against them.

When a spy ring known as the Black Dragon Society strikes down a scientist, Rusty Ryan and the Boyville Brigadiers team up with the man's daughter to stop the organization before it sabotages the Marlin Die Casting Works. With danger closing in from all sides, the kids must outthink a ruthless enemy at every turn to protect vital wartime production and uncover the society's secrets.