I'm probably going to keep doing Nancy Drew Girl Detective reviews, until the end of the series. Because I'm, like, halfway through the series at this point.
As you can see, I'm counting the Supermystery books as part of the Girl Detective series. I'm not sure how to classify the Nancy Drew / Hardy Boys crossover, though. It clearly takes place in the Girl Detective continuity, so it is part of that series? Or is it just an extension of the older Nancy Drew / Hardy Boys series?
I'm leaning towards putting all FOUR Nancy Drew / Hardy Boys crossover series in the same playlist on YouTube.