Rusty Crayfish

S1, E5: In the land of ten thousand lakes, Leech Lake stands out, because it's the third largest lake located entirely within the state of Minnesota. Known as a destination for walleye, pike and muskie fishing, Leech Lake attracts fishermen from all over the Midwest... and that's where the trouble began. Fishermen from the Ohio River Basin brought rusty crawfish up to Leech Lake as bait... and when done f