Heaven's Shadow - reading

Finished "Heaven's Shadow" by David S. Goyer & Michael Cassutt. I give it 2 of 5 stars ("it was okay"), mostly because I grew disinterested when the story moved into Dean Koontz territory of weirdness. Yeah, they justified it in the end, but I was hoping for a different story than I got. To the authors: it's not you, it's me.