Most conventional stories for girls and young women ended in marriage. Women vanished into it. The end. And then what happened and who were they? The fairy tale “Bluebeard” is about a woman who finds out, by disobeying his orders and using the forbidden key to unlock the torture chamber full of her predecessors’ corpses, that she’s married a serial killer, whose intent to kill her is whetted by her knowledge. It’s an unusual fairy tale in that she survives and he does not.