See How They Run (out Sep 29) is about a real murder set in the middle of a fake murder. Set on London's West End in the early 1950s, the actors performing Agatha Christie's stage play The Mousetrap are caught up in their own mystery when a Hollywood screenwriter is murdered. It works as a credible whodunit with stars Sam Rockwell and Saoirse Ronan (who play the investigating detectives) the best of the cast. Grade: B+.