See How They Run: Tom George’s comedic murder mystery takes place in the backstage of a theater play; as the play is an Agatha Christie classic on the verge, maybe, of being adapted into a film, this is very, very metalinguistic. The mystery is merely OK, but the highlight is the interaction between the weary detective and his overeager green assistant. They are played by an enticing pair, Sam Rockwell as the detective and Saoirse Ronan as his assistant; her misplaced enthusiasm works great in opposition to his gruffness. The sleazy victim (and narrator) is played by an also effective Adrien Brody. The production design, by Amanda McArthur, and the costume design, by Odile Dicks-Mireaux, are both effective, if a little bit on the excessively neat side of things. The film moves along nicely and snappily, not overstaying its welcome.