As far as 1970s adventure tv for young people goes (most were really cheap and dumb), this was a fine series.
But the writes and producers really dropped the ball on the Nancy drew segments. The first Drew episode was a perfect modern adaptation - the characters were right (especially George) and the 'gothic lite' mystery was intriguing. But after that it seemed like the writers (all make, I'd guess) just didn't know how to come up with suitable stories. Nancy was almost immediately shifted to a secondary character in her own segment, the action carried by male guest stars. It was only a few episodes before the Hardy Boys took over entirely. Nancy just made guest appearances.
It's kind of sad.
But the writes and producers really dropped the ball on the Nancy drew segments. The first Drew episode was a perfect modern adaptation - the characters were right (especially George) and the 'gothic lite' mystery was intriguing. But after that it seemed like the writers (all make, I'd guess) just didn't know how to come up with suitable stories. Nancy was almost immediately shifted to a secondary character in her own segment, the action carried by male guest stars. It was only a few episodes before the Hardy Boys took over entirely. Nancy just made guest appearances.
It's kind of sad.