Child 44 is a thriller set in the terror of 1950s Stalinist Russia, a brutal regime that executed anyone who disagreed with its dogma. It proclaimed to be a perfect society. So, when a series of brutal murders take place, no one is permitted to say that these are the work of a serial killer. In a perfect society there can be no crime.
One man, Leo Demidov, a State security agent, a man who has spent his entire career arresting innocent men and women, decides to redeem himself by catching this killer. To do so, he must buck the system, risking his life and the life of everyone he loves.