Ninja are now seen in popular media around the world. But as their profile rises, their reality gets muddied amid legends and fantasies. The truth about authentic ninja lies unknown, shrouded in mystery. This program carefully examines the fighting skills and tools used by actual ninja, and conducts experiments to determine the "Ninja Truth". The ninja had over 400 distinctive tools and weapons to fight with and defend themselves. The most familiar was one called the "kusari-gama", a chain and sickle that could do serious damage to an opponent. But it raises questions about how they used it when fighting, and how they were able to conceal it. The ninja were also ingenious at hiding themselves. We'll do an experiment to see if those hiding techniques really worked, and we'll look at a brand-new technology for hiding people.