Remember the scene in “Rear Window” where Raymond Burr kills his wife, hacks up her body, stuffs it in luggage, carts it outside, and buries it in the flower garden? You don’t, because it was all off screen, but here Nicolas Winding Refn shows us what Hitchcock couldn’t, and doesn’t leave much to the imagination. It’s a grizzly bit of business, and like the previous two films in this remarkably realistic trilogy, it underscores the gruesome, dangerous, paranoid, and ultimately sad life of the career underground criminal.