Internationally, he is known for his roles as Jaqen H'ghar in the second, fifth and sixth seasons of the TV series Game of Thrones,[1][2] as well as Sebastian Berger in the police procedural Crossing Lines.

When he was 17 years old, shortly after the fall of the Berlin Wall, he travelled to the United States as an exchange student.

[3] Since 1998, he has played mostly supporting roles in numerous German and international TV and film productions.

In his first leading role he portrayed Stephan in the 2000 gay milieu study No One Sleeps.

[citation needed] From 2013 to 2015, he starred in the crime series Crossing Lines as Kommissar Sebastian Berger, a German police officer.