John Mooney was a scientist who was stationed at the United States's Amundsen–Scott South Pole Station in Antarctica and who Marshal Carrie Stetko sought to interview in regards to the death of Anton Weiss.

Unfortunately, things took a tragic turn when Carrie arrived at the Russian Station that Mooney was at and discovered that he had been fatally stabbed in the throat by a mysterious masked figure who later sought to kill Carrie herself.