Jamie Dornan and Cillian Murphy have joined the cast of the World War II film Anthropoid. The film is based on a true story in which two Czechoslovak soldiers were trained by the British to assassinate Reinhard Heydrich, the head of the Nazi SS. The codename of the operation was "Anthropoid". The film was directed by Sean Ellis, the director of Supermarket Night, and filming began in Prague, Czech Republic in July 2015.