Forged in Fire: Season 4, Episode 18

4 - 18: The Yatagan

The competition shifts into high gear when the smiths are tasked with turning the rusted steel of a 1971 Mercury Cougar into their signature blade in just three hours. After a grueling round of testing, only two competitors' roads lead them back to their home forge where they have just five days to create an elite military weapon known as the Yatagan.