Close-up on the contorted face of a man who's being electrocuted by some kind of ancient medical device that shoots lightning bolts through your ears. Egads!
The music is foreboding. The man's mouth is moving but his screams are inaudible.
The intertitle speaks for him: "I won't talk!" it reads. "I won't say a word!!!"
Cut to: the men who are torturing him from behind a pane of glass, begging him to "speak!"
Suddenly the camera pans out to show that the whole scene is actually playing on a movie screen, at a theater — the old kind with a classy crowd dressed to the nines and an orchestra in front, performing the film score.
The crowd reacts boisterously (gasping, laughing) as the man on screen reunites with his dog, dons a mask, flashes a hundred-watt smile, retrieves the damsel in distress (decked out in furs, what else?) from the vault where she has been stashed, and makes a grand escape.