Explore the dark side of naval warfare--a world of deception, double-dealing, and disguised vessels--throughout the first half of the 20th century. See how Britain's Royal Navy attempted to fool German U-boats through the technique of "dazzle painting," then look at the ingeniously designed Gizmo, an American spy vessel that never made it beyond American waters. Witness the wild, creative, and audacious ways navies disguised their vessels in times of war and the use of intelligence to carry out naval attacks.