“Sinners” is a lot of movie.

It’s a period crime movie, of sorts, following the exploits of twins (played by Michael B. Jordan), who return from bootlegging with Al Capone to their small Mississippi town, determined to create something of their own. It’s also, chiefly, a horror movie, about a group of vampires who are looking for trouble. And, thanks to the thoughtfulness of writer/director Ryan Coogler, it’s a movie about community and how the safe spaces we create are still vulnerable to outside forces – supernatural and otherwise.

In fact, “Sinners” is so much of a movie that it spills past the credits, with a pair of scenes after the movie is over.

These sequences are fascinating expansions of the main narrative and are very much worth discussing. But before we do, we have to issue a very stern spoiler warning. If you haven’t seen the movie,...