I enjoyed Silentium. Very good book, and very suspenseful as well. However, I felt it left some loose ends, and left many questions still unanswered. The whole Path Kethona thing felt detached from the storyline. How did that settlement of Forerunners get there? Whats the deal with all the empty Forerunner fleets and Precursor mumbo-jumbo? What exactly is that anchor thing, what is its purpose, and why is it there?
But the biggest question still in my mind is: Where did the Forerunners go??? Was every single one of them consumed by the Flood or Halo? Or did some manage to get away? Did some possibly go live with the other Forerunners in Path Kethona?
Maybe its just me, but I still feel empty as far as the Flood, Forerunners, Precursors, etc. I hope either Halo 5 and 6 cover this, or maybe more books will be released. Who knows? Maybe Infinity travels to Path Kethona and finds the Forerunner settlement?
Oh and PS: Wasn't Infinity assembled in Path Kethona?? If so, why didn't the UNSC see any Forerunner or Precursor shenanigans such as empty ships and star roads?