Breaking the Code
The discovery of Ted as a Soviet spy hinged on the breaking of the seemingly unbreakable Venona code, a feat made possible by the negligence of some Soviet agents. As the FBI interrogated Ted, they faced a challenge; despite having detailed information, they couldn't reveal their intelligence-gathering methods. Ted's pre-planned strategy of silence proved effective, showcasing his intelligence and resolve as he refused to admit to any wrongdoing, ultimately leading to a stalemate with the authorities.In this clip
From this podcast

SpyCast
“The 18-Year-Old Soviet Spy on the Manhattan Project: Ted Hall” – with Director Steve James
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