Was the longest serving narrator of the very popular German audio play "Die drei Fragezeichen" (stylized as "Die drei ???"), which is based on "The Three Investigators" by
Robert Arthur. Not counting specials, he narrated 82 episodes, more than previous narrators
Peter Pasetti (62 episodes) and
Matthias Fuchs (38 episodes). When Fritsch left the series, he was replaced by
Axel Milberg.