Navy Commander Don Winslow and his junior officer, Lieutenant "Red" Pennington, are reassigned to the Coast Guard after serving at Pearl Harbor. They focus on anti-fifth column work on the mainland, uncovering a plot by the notorious alien enemy, The Scorpion, who is secretly working with the Japanese to lay the groundwork for an attack on the Pacific coast.
Don Winslow of the Coast Guard
A daring Coast Guard veteran undertakes a treacherous mission to safeguard the country's coastline from formidable foes.
