Jason Clarke, Jack Reynor and Mia Wasikowska also join upCo-writer/director Cedric Jimenez has rounded up quite the cast for his next film, which despite sounding like an error in the subbing stage at a magazine, is actually called HHHH. It’ll star Rosamund Pike, Jason Clarke, Jack O’Connell and Mia Wasikowska.The film is based on Lauren Binet’s novel and tracks the ascension of Reinhard Heydrich (Clarke), a key part of Hitler’s Third Reich (he was known as the ‘Reich Protector’) and one of the terrifying architects of the Final Solution.