 In 2011, Koch appeared in the Czech production "The Shadow of the Horse (Ve Stinu)", in which Koch played the leading role of the investigator Zenk, whose mission is to win through one personal rival and through the regime of communist Prague in the 50s.In the German production adapted from Bernhard Schlink’s novel "Das Wochenende" in 2012, Koch portrays an amnestied RAF terrorist (Jens Kessler), who has a reunion with his old mates.In the same year Koch began shooting the Greek-Russian drama film "God Loves Caviar" based upon the true story of Ioannis Varvakis, played by Koch, a former pirate who moved up to being a Greek caviar merchant and eventual benefactor from Psara.