"Anastasia," our heroine, makes us think of the fabled long lost Romanov, who might have wandered America after the Russian Revolution. (Indeed, Anastasia Steele does seem like a former princess, rediscovering her own greatness in the course of the story. She goes from a frumpy, clumsy bookworm to a polished multi-trillionaire mistress of a vast domain. That last name--"Steele"--points to the strength of her character, and Johnson does play her as a kind of superhero.) The name "Christian" gives to the franchise's hero an aura of otherworldliness. And then the last name "Grey" suggests shadows, mysteries, skeletons in the closet, "grey areas." (Say what you will about E.L. James: There's a reason she now has enough money to purchase your soul, and several small islands, and still have heaps of gold in the bank.) The first "Fifty Shades" movie told a smart, diverting Hero's-Journey tale. Anastasia leaves her Ord...