Crux was not a bad book. The plot follows a reasonably entertaining adventure and yet it was rather obvious throughout. Lacking subtlety, the story relies on the intense emotions generated as our main man Keith Johnson is pummeled into a ball of revenge-laden rage and then slowly metes out his own sense of justice. Emphasis on "slowly" because after the events set in the Vietnam war the pace dies off significantly and it doesn't really pick back up until the finale.
There were a few passages in which the prose was quite fine, but otherwise it was generally a touch bland. The French professor, Henri, provided a sprinkling of elegance to an otherwise very 'murican meathead vibe. The characters were strikingly one dimensional, there was no mistaking the good guys for the bad guys or vice versa. This makes it easy to align your team flag but limits the possibility of being taken by surprise. In my view the story had one genuine surprise revelation near the end, but I didn't find it very significant.
Crux isn't a typical read for me at all, so perhaps I'm not the most apt reader to review it. I did enjoy reading it, but I was hoping for a more twisted and shocking revengefest.