Bruce Wayne unmasked in new Batman vs Superman trailer

Low lighting. 

Sweaty, burly men in chains. 

Uniforms. Leather masks.

Fifty Shades Darker? No, it's the latest teaser for Batman v Superman - in which things don't seem to be going swimmingly for one Bruce Wayne (Ben Affleck).

An empiric Superman seems to be lauding it over the captured vigilante, but if we're reading the pantomime sneering correctly, we'd say this has got "Bat dream sequence" written all over it.

We'll have to wait until 25 March 2016 to find out.