Based on the novel of the same name by Jennie Rooney and adapted for the screen by Lindsay Shapero, Red Joan focuses on a woman (Judi Dench) , living in retirement, who is suddenly arrested by MI5 and accused of spying for Russia during World War II. Sophie Cookson plays the younger version of Dench’s character, a Cambridge physics student who goes to work in a top-secret nuclear research facility.
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