Linden Chiles seemed to have specialized in playing bad guys. Nineteen days after this episode first aired, he played a memorable bad guy in The Green Hornet, which also aired on ABC.
The plot of this episode is very similar to that of the lost Canadian telefilm "The Radioactive Man," which was remade as the Avengers episode of the same name.
Character Anne Frazier was caught by the FBI before she was exposed to radiation poisoning, thereby saving her life. The irony of the plot is that in real life, Allison Hayes who played Anne Frazier, would later be diagnosed with lead blood poisoning due to a calcium supplement she was taking and would die of leukemia about ten years after this episode aired. Just before she died, Allison started a campaign to have the FDA monitor the sale of dietary supplements, but they remain mostly unregulated (she was only partially successful in getting some imported supplements regulated).