Trixie Belden wasn't that popular while I was growing up (in the 1980s and 1990s). I never would have known about her if my Baby Boomer mom hadn't introduced me to her.

I think that Millennials, Zoomers, and Alphas (Gens Y, Z, & AA) would really like Trixie and her friends -- especially if the franchise was updated for the 21st Century!