In this remarkable book Nigel West is the first writer to tie together all the ramifications of the Soviet spying effort to steal the A-Bomb across many countries with accomplices and agents in the UK, Canada and the United States and elsewhere, in a tightly constructed demonstration of the effectiveness of the NKVD and GRU methods. The decrypted Venona cables are reproduced and commented here in light of the replies given by Moscow Center and juxtaposed to show the full circle of the espionage effort for the first time in its entirety.