Part one of a two-part episode. Retired agent Todd Hulsey reviews a nuclear weapons espionage case involving Pedro Leonardo Mascheroni and his wife, Marjorie Mascheroni. "Leo" Mascheroni was a theoretical physicist formerly employed at the Los Alamos National Laboratory in New Mexico. The FBI discovered that he had contacted a foreign country and had offered to sell his expertise and assistance to build a nuclear weapons program for that nation. Hulsey supervised the Albuquerque Division case and the agents, analysts and surveillance group members who gathered the evidence needed to prosecute the Mascheronis for espionage. They both agreed to plead guilty to illegally passing nuclear weapons program documents, which contained information derived from classified and restricted data. He was sentenced to five years and she to one year in prison.

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048: Todd Hulsey - Nuclear Weapons, Mascheroni Espionage Case (Part 1)