Known as perhaps the greatest winter Steelhead fishery in the world, host Trev Gowdy visits the Niagra River in search of trophy Trout, in this episode of Monster Fish. Boating just below the famous falls, Trev and Captain Danny must dodge impassable rapids and boat smashing icebergs. Such a powerful river can only be inhabited by the most powerful fish, and Trev soon hooks into a beauty. Despite landing the biggest Brown Trout of his life trolling on the nearby Lake Ontario, the big Steelhead are still eluding the duo. Just as Trev feels something big on the end of his line, a murderous whirlpool appears to threaten the crew.