This is a huge topic; here’s the tip of the proverbial iceberg that I can see, and why you should maybe care.
The idea to write about this came up when I did my little study, short and flawed as it was, to find out if people are still buying fairy tales in any quantity (see "Do people still read fairy tales?"). What I found was a little surprising: Grimm outsells everybody. The Complete Grimm that Barnes & Noble puts out was ranked at 155 on their top seller lists in early January 2012. No other fairy tale book that I could find even came close to that.
So what’s the lesson there? Could be a lot of things, but I think you have to acknowledge Grimm’s appeal. What does Grimm do well? One thing that, I suspect, rings true is that these particular stories believe in good and evil. I know that’s not fashionable, but it’s true. Let me give one example.
I doesn’t get much starker than in “The Juniper Tree.” The villain, a stepmother who craves her husband’s property for her daughter instead of the dead wife’s son, allows what the story calls an “evil” thought to overpower her and cuts the boy’s head off. As if that’s not bad enough, she manages to get her daughter (whom she presumably loves less than her own skin) to think she (the daughter) killed the boy. Then she cooks the boy in a stew, which the unwitting, good-hearted father devours with a rare appetite.
So this is evil—sharp, well-defined evil. Far-fetched? A little, maybe. But I’ve seen the evening news. Enough said.
Unlike in normal life, this evil stepmother is going to get hers—and how. That’s one thing you know, when you’re reading Grimm. You see all this unfolding with horror and, even though it’s understated, it’s potent. But you know it’s somehow coming out well in the end. And it does.
The sister, poor thing, weeping and hysterical, takes the boy’s bones (removed from the empty stewpot by the stepmother) and buries them under the boy’s dead mother’s favorite juniper tree. Something magical happens—you guessed that, right?—and the boy’s bones vanish, a bird appears, and it flies away and sings a beautiful song, earning itself three strange objects. At least, so the characters in the story think, though the song lyrics are terrible. “My mother murdered me, my father ate of me …”
I won’t go through the whole thing. Cut to the happy ending: the father gets a beautiful gold necklace, the sister gets a beautiful pair of shoes, and the stepmother gets a millstone on her head. The bird goes back to being the boy. The end.
There’s even a little more on this line, but that’s enough to give the gist.
Now, picking up a modern fairy tale, or a modern retelling of a fairy tale, or a modern fantasy novel (or many other kinds of novels), off the shelf, you don’t know two things going in: (1) if there’s going to be a real villain, who’s understandable but still wicked in the old sense of “bad,” “not good”; and (2) if there’s going to be a “happy ending,” in the sense that bad people will get punished and good ones will win through. Actually there’s a third: you don’t know if there’s going to be anybody that’s “good” in the story either; I mean, a hero you can want to live through it and thrive.
Picking up Grimm, you can basically assume (1) and (2) at least, and usually you’ll get (3) into the bargain. These aren’t religious stories; they aren’t “Christian,” for instance. But they are profoundly moral: they believe in right and wrong. And part of the satisfying nature of them is this “right and wrong,” good and evil, punishment and reward, quality.
Could it be that people are reading Grimm because they, too, believe in good and evil, punishment and reward? Seems likely. Crime shows are among the very most popular on television—especially the ones that believe in punishments for evildoers, and vindication for victims. They too are profoundly moral. You might not agree with all of their morals, but they are moral in that sense.
Whereas what could be more disappointing than spending hours reading a thick fantasy novel and finding, at the end, that (1) there wasn’t really any bad guy; or (2) the bad guy wasn’t at all believable; or (3) there wasn’t any character with a shred of integrity or loyalty (they were all bad guys); or (4) there wasn’t a good, satisfying outcome (nobody who deserved it got punished, or won the day)? Grimm will give you most or all of those in just about every three-to-five page story. That translates to hours of satisfying reading.