I agree with the other comment. Interesting also for its depiction of German youth culture, "hippies" and this transitional era as a whole. Think Dragnet for the era but more Colombo or Kojak for the characterizations.

English-dubbed 16mm prints of various Der Kommissar episodes are in circulation, however usually in under-used archives, university German departments. Hard to find but available. On video, I do not know.