The novelisation of The Force Awakens.
I've read quite a few novelisations by ADF – the first three Alien films and his Star Wars works (He ghost wrote A New Hope and the original story Splinter of the Mind's Eye). This is one of his more pedestrian works and probably one I won't dip into that many times.
Fast paced scenes are reduced to plodding, and there's little tension generated in the scenes which were tense on the screen. The mental-rape ability of Ren he uses against Poe and Rey, for instance.
On the plus side, there's more character development for Han Solo and General Organa, and some deleted scenes that add a little to the depth of the story.