Under Stalin’s terrifying regime, families live in fear. When the all-powerful State claims there is no such thing as crime, who dares disagree? An ambitious secret police officer, Leo Demidov believes he’s helping to build the perfect society.

But when he uncovers evidence of a killer at large – a threat the state won’t admit exists – Demidov must risk everything, including the lives of those he loves, in order to expose the truth