Home People Klaus Detlef Sierck Klaus Detlef Sierck movies Klaus Detlef Sierck movies Klaus Detlef Sierck Movies (7) The Great King (1942) As Prince Heinrich (younger). He was 16 years old Cadets (1941) As Kadett Hohenhausen. He was 16 years old Kopf hoch, Johannes! (1941) As Johannes von Redel. He was 15 years old Aus erster Ehe (1940) As Thomas Helmerding. He was 15 years old Streit um den Knaben Jo (1939) As Erwin. He was 14 years old Covered Tracks (1938) As Page Armand. He was 13 years old Shadows over St. Pauli (1938) As Hummel. He was 12 years old
