The movie's tone is really going to be the key to whether or not it works.
Blunt and Johnson are really charming, appealing performers, so that obviously helps. Collet-Serra seems, on the surface, to be a baffling choice to helm a family-appropriate adventure film, but if one looks deeper at his movies, one will find he's a pretty self-aware filmmaker with a very playful side. THE COMMUTER, from earlier this year, was a fun and fairly stylish B-movie that knew exactly what it was trying to be.