The Bombay Boomerang

The Hardy Boys embark on two thrilling adventures that put national security at risk. In the first, Frank and Joe travel to Alaska, where they discover a stolen device causing shipwrecks in the Bering Sea. They must capture the thieves, recover the device, and prevent a potential war. In the second adventure, Joe accidentally dials the Pentagon, leading them to a case named 'Bombay Boomerang'. They must navigate danger and intrigue while saving their father from a gang stealing mercury in Baltimore harbor, linked to the theft of a top-secret missile. The Hardys must act quickly to thwart a scheme that threatens widespread chaos in the United States.