To me, this was an EXCELLENT Warhammer 40K novel. McNeill manages to throw about 7 or 8 very different and distinct types of WH40K characters into a cosmic quest to a region of the galaxy known as the Halo Scar. McNeill manages to mix in elements of real-world machinery, supernatural events of Chaos, and a rather clever humanizing faction of a massive starship with its commanding yet sympathizing tech-priest crew. I loved the attention to technical detail presented here, and yet McNeill manages to project a lot of emotion through all this data. Any details would just spoil the plot, but suffice it to say when the expedition reaches the Halo Scar and an orbital station nearby, all Chaos breaks loose. It helps to know that sequels will follow, thus making the abrupt ending more palatable. If you are even thinking about trying science fiction someday, this would be a great place to start.