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Kate Henderson's life must seem pretty ordinary to those who don't know her well, as she's happily married with two teenagers and a job in the civil service. However, Kate's real job is heading up the Russia Desk of the Secret Intelligence Service. When her undercover operations reveal alarming evidence that a senior UK politician is possibly a high-level Russian asset, Kate is in a race against time to uncover their identity. Then a young woman is brutally murdered, throwing Kate and her team into the spotlight. With blood on her hands, her reputation to uphold, her family hanging by a thread, and an election looming, Kate is quickly running out of options and the clock is ticking.

Kate suspects that her asset is in danger and, defying orders, prepares to rescue her. As the prime ministerial candidates start to campaign, she uncovers their murky Russian connections.

Kate's bold rescue mission in Malta backfires and she draws flak from all sides, so she goes on the hunt for a mole inside the UK government and within her own team at MI6. Thriller, starring Gemma Arterton.

The pressure mounts on Kate when the Russians brazenly target her family, while Rav follows the trail of Ryan Walker's murky finances to Geneva - with drastic consequences. Thriller adapted from Tom Bradby's novel, starring Gemma Arterton.