Dr. Culthers discovers a cure for drug addiction and wills the formula to his daughter, Mary, who is instructed to release it after his death. The doctor's greedy nephew, Vance Gordon, and his accomplices, Casper Darnell and Janet Warner, ...See moreDr. Culthers discovers a cure for drug addiction and wills the formula to his daughter, Mary, who is instructed to release it after his death. The doctor's greedy nephew, Vance Gordon, and his accomplices, Casper Darnell and Janet Warner, lure Culthers to the Florida Everglades and tie him to a tree, where he goes insane under the hot sun. The doctor breaks free and becomes known as the maniacal "Swamp Demon," until Mary foils the plot with the help of Dick Mason, and her father regains his sanity. Written by
AFI
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