What if it wasn't an accident? 1969. Eloise Shepherd, one of MI6's brightest rising stars, is working undercover in Soviet Russia as Magdalina Novikova. Her mission is to persuade nuclear physicist Stanislav Kalashnik to defect and bring his knowledge of Russian weapons back to the UK. On the verge of success, the operation fails suddenly and spectacularly. Seventeen years later, Kalashnik is Chief Engineer at the power plant near Pripyat known...