Tight suspense fizzles out into stupidity

Rating: 6/10 (2 March 2015)

This evolved into a tight, suspenseful thriller: what happened. An intriguing story unfolded, but the movie went on and on and on. At the end, everyone has become seriously stupid and so the movie lost me.
Clearly, there was supposed to be an ironic story of a media feeding frenzy. The TV coverage motivated the action of the characters. Okay, but it was not told all that clearly and there was little irony and no humor to this part of the movie.
Who was responsible for such a long picture. Anyone watching it could tell that the compelling nature of the story was dwindling.
Okay but could have been m much better (and shorter).