The sharpened claws of a Yellow Ace are red with the blood of Americans, and only G-8 and his Battle Aces remain in the path of the Sky Serpent! You've not known a thrill or a haunting fear until you've stood with the Master Spy at this cross-road of his career, and fought shoulder to shoulder with him against a scourge that it seemed impossible to combat! G-8 and his Battle Aces rode the nostalgia boom ten years after World War I ended. These high-flying exploits were tall tales of a World War that might have been, featuring monster bats, German zombies, wolf-men, harpies, Martians, and even tentacled floating monsters.