Dr Sian Williams investigates the story of the Welsh codebreaker whose naked body was found inside a bag in his bath. Mystery still surrounds how and why Gareth Williams died.
There are 7 episodes avaiable of Death of a Codebreaker.
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The first episode of Death of a Codebreaker that we have available was released 31 October 2023.
Death of a Codebreaker is produced and created by BBC Radio Wales.
