What's The Deal With This Publicity Photo?

Seriously, what's the deal with this publicity photo? It's for a show on the BBC.

Is the guy on the left about to bust a cap? Or is he about to bring the pain? And the lady on the right; I'm pretty sure she's gonna be fighting crime or aliens or some shit, but she's not sure yet. I know what she is sure of; the guy in back is not Mark-Paul Gosselaar from Saved By The Bell. She knows now that he's not Mark-Paul Gosselaar, because after the first read-through for this show, she slept with him thinking he was Mark-Paul Gosselaar. She soon found out his real identity, and now she has feelings for the lead guy with the gun. She feels she deserves to be with the star of the show, not the 3rd supporting actor.