Don Winslow of The Coast Guard Chapter 12

Don Winslow of the Coast Guard (1943) is a Universal Pictures film serial based on the comic strip by Frank V. Martinbek. After service at Pearl Harbor, Naval Commander Don Winslow, and his friend and junior officer, Lieutenant "Red" Pennington, are assigned to the Coast Guard. There they are ordered to devote their activities to anti-fifth column work on the mainland. Winslow learns that The Scorpion, a fascist synthesizer, is in the pay of the Japanese and is expected to lay the ground work for a Japanese attack on the Pacific coast. Constantly in peril and aided by Mercedes Colby, the daughter of a Navy Admiral, they investigate secret island-bases and battles with submarines and enemy planes...