

Dyer is a good, professional author and this World War Two espionage thriller is a work of quality, research and attention to detail. Based largely on factual events, The Ultra Betrayal tells the story of a Bletchley cryptologist who appears to have gone rogue, and is pursued by American and British MI6 agents before he can sell crucial intelligence to the Germans – information of such value it could change the whole outcome of the war. It is a slow burner, with huge swathes of simmering ...
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