I discovered Nancy Drew last week. I knew about it vaguely for years, but now I watched They Cloned Tyrone, which has a character who is a big fan, which I found endearing, so I read the first 4 books (which are now in the public domain).

I am not going to read more because I don't like that she never ages. If you want a normally-aging female detective series, check out Judy Bolton.

I really enjoyed Nancy Drew in my youth, nice collection here.