A semi-autobiographical thriller from BAFTA and Emmy-winning writer Stephen Poliakoff. Toby Stephens and Keeley Hawes lead a stellar cast. Britain, 1958. As a Russian emigre, businessman Samuel Petrukin is determined to integrate his young family into the establishment. So when Samuel meets the captivating Kathleen Shaw and her husband Richard - a war-hero and member of parliament - he's dazzled by their upper-class glamour. But then MI5 agents blackmail Samuel into spying on the Shaws, and he's drawn into a dark web of deception. These shadowy government operatives could be tempting him into a deadly trap. Are the Shaws really involved in a plot to betray their nation? The country's future is shrouded in doubt. Who can Samuel trust? Anyone?