WINNER OF THE PEOPLE’S BOOK PRIZE!‘Relentless and sleek. This pitch-perfect debut signals the arrival of a remarkable talent.’ A.J. Finn, author of The Woman in the Window‘A thoroughly engaging spy thriller that had me gripped from start to finish and left me desperate for more!’ S. J. Watson, author of Before I Go to Sleep‘A clever and complex thriller with truly memorable characters.’ Elly Griffiths, author of the Dr Ruth Galloway mysteries‘A thriller of true ambition and scope.’ Lucie Whitehouse, author of Critical IncidentsIt’s 1961 and the white heat of the Space Race is making the Cold War even colder. Richard Knox is a secret agent in big trouble. He’s been hung out to dry by a traitor in MI5, and the only way to clear his name could destroy him. Meanwhile in a secret Russian city, brilliant scientist Irina Valera makes a discovery that will change the world, and hand the KGB unimaginable power. Desperate for a way back into MI5, Knox finds an unlikely ally in Abey Bennett, a CIA recruit who’s determined to prove herself whatever the cost…As the age of global surveillance dawns, three powers will battle for dominance, and three people will fight to survive.