A Spy in the Blood is a 2026 novel by Paul Warner.
It will be the first book in a series.
Plot The plot stars a retired MI6 spy named Mark Wolfe, as he is called back to find his daughter in Afghanistan after she goes missing during a mission.
Reception Financial Times called it an "impressive launch." The Times, in a review of it and other thriller books, said "Paul Warner's impressive debut wins the reader's trust with its nuanced depiction of character, brisk handling of the action and sure grasp of the cost to spies of a life of deception and betrayal."
Television adaptation In June 2026, a television adaptation of the novel was announced by Netflix, with A24 co-producing the series. Millie Bobby Brown and David Harbour lead the series as Rebecca and Matt Wolfe respectively, with Jack Thorne serving as writer and executive producer.
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