As far as stories go, this one is pretty straight-forward. Marines on what they believe is a Search & Rescue mission. Naturally it turns out to be more than that. In a journey from Point A to Point B and then back to Point A, chaos ensues, some people die and in the end nothing is accomplished other than those deaths.
Maybe it would've helped if I was more familiar with the authors other works and the Spiders. The reader is told how all powerful the enemy is (and based off of what a Jr version of it can do, I'd have to agree) but not having read anything about these Spiders before, I had no real experience to back that up.
That said, the story did interest me enough to one day read more from this author.