Jed Midnight, played by Bill Nagy in the film Goldfinger, is one of a trio of American mob bosses who join up with Auric Goldfinger for Operation Grand Slam. His role was to supply the nerve gas, shipped to the United States from Canada, that would be used to kill the guards at Fort Knox.
He, Martin Solo, and Jack Strap were promised one million dollars in stolen gold bullion for their participation. However, they are being duped by Goldfinger, who, after explaining that he plans to irradiate the gold, not steal it, sadistically kills both Midnight and Strap, who he was simply using to boost his own ego.
In the novel, it is stated that the gang he belongs to is called the Shadow Syndicate.