From Wikipedia, the free encyclopedia. August Diehl (born 4 January 1976) is a German actor, known for playing the Gestapo Sturmbannführer Dieter Hellstrom in Inglourious Basterds and Michael "Mike" Krause, Evelyn Salt's husband, in the movie Salt. Description above from the Wikipedia article August Diehl, licensed under CC-BY-SA, full list of contributors on Wikipedia.