Maze Runner: The Scorch Trials (out Sep 10) feels like a bridge between the successful 2014 original and a final instalment due for release in early 2017. In essence, this is a two-hour chase movie. A group of teenagers are on the run from some bad guys with no substantive plan. I enjoyed the intricate locations and the director's use of light but there's not a lot in the way of story. Grade: B-.