It's hard to argue with the sheer enjoyability of the "John Wick" films. In what feels like a short time, Keanu Reeves and stuntman-turned-director Chad Stahelski have built an original franchise that stands apart from the sea of tried-and-true superhero slugfests. It'd be easy to credit Reeves' titular rogue killer as the main selling point, but the "John Wick" films also benefit from Stahelski's own keen eye for both high-octane action and rich worldbuilding.
The world of "John Wick" is a...