During 1991 to 1995, I used to watch the English (dubbed) version in our national channel (doordarshan) along with other German series such as Derrick, The Investigator (Der Fahnder). God How I loved them all, even if these were dubbed. I am still a great fan of Klaus Wennemann for his unique portrayal of The Investigator (Der Fahnder).
About Old Fox: I remember it was really like a real life police investigation, because clues to the murders were obtained real slow. most of these were got when the senior officer (Old Fox) cross-questioned the people involved and found some glitches in their story. Like I said, very much real life, so some people found it dull and boring, but for those who followed the dialogues, it was brilliant.