The Untouchables (1959)

Season 2: Episode 20

Mid-October 1932. The nation's attention is on the election campaign between incumbent president Herbert Hoover and his opponent Franklin D. Roosevelt, who is crippled by polio. With Prohibition still the law of the land, the government is looking for ways to denature alcohol, which legitimate manufactures need for industrial purposes (making perfumes, etc). Should the alcohol fall into the wrong hands, if it was denatured, it would be useless to bootleggers.