“Fever Lake” functions as a cabin-in-the-woods movie set in southeast Wisconsin. Six students—three men and three women—from Carthage College in Kenosha take a trip to an abandoned house situated on the secluded side of Fever Lake. A hermit, played by Michael Wise, informs the sheriff (Bo Hopkins) that the spirit of the lake is being unleashed, putting these young people in considerable danger. Filmed during th…