*WINNER OF THE BAILLIE GIFFORD PRIZE FOR NON-FICTION 2018*'As moving as it is painstakingly researched. . . a cracking read' Viv Groskop, ObserverOn 26 April 1986 at 1.23am a reactor at the Chernobyl Nuclear Power Plant in Soviet Ukraine exploded. While the authorities scrambled to understand what was occurring, workers, engineers, firefighters and those living in the area were abandoned to their fate. The blast