As America threatened to invade Japan in 1944, the Japanese turned to desperate tactics – kamikaze suicide bombers. Now, experts are uncovering the clues to the terrifying weapons Japan sent into war: killer planes, rocket bombs and super torpedoes, all guided by human pilots. Exploring Japan’s coast, the experts uncover caves, overgrown bunkers and top-secret bases that hide the secrets to how kamikaze weapons were built and launched.