Build a lot of tension early on, bringing cheer to a, but the tension remains then but only to an average Leven and there in the film but then no real climax.
The story should be closely followed, many are only at the end makes sense. Whereby at the end of "AHA" effect fails the audience pondering is whether this scene has now led to .... Some but remains completely without explanation.
Hence the conclusion: Not a bad but also not a super movie