To no one?s surprise at all, Fantastic Beasts: The Crimes of Grindelwald won the weekend box office, but it was just a good ? not fantastic ? debut for the Harry Potter spinoff sequel. The sequel to 2016?s Fantastic Beasts and Where to Find Them raked in $62.2 million over its first weekend in theaters, and while that might seem like a respectable debut for most movies, it?s actually the weakest opening weekend for any film so far in J.K.