Forged in Fire S09E03 - The Ninja's Sword

In this competition, it's all about Japan's shadow warriors--the ninja. Four smiths are challenged to forge their own version of a ninja blade, and in a Forged in Fire first, the smith with the lightest blade wins an extra 20 minutes in the second round. After an intense round of testing, the two surviving smiths return home to recreate the lethal and stealthy Ninjato Sword. Two smiths will enter the final testing battle, but only one will emerge with a check for $10,000 and the title of Forged in Fire Champion.