Usually when a book leaves you wonder what just happened it's a good sign. I really like those kind of books that leave somw mystery up in the air for the reader to figure it out.
The latest book that I just finished kinda did that, but not in a good way. The book, Gridlinked by Neal Asher wasn't bad overall. It did have some interesting concepts and character development. But the story itself fell a bit short.
There were events that were never explained, but I really couldn't figure out reasons behind some of them. Maybe I missed something, but I'm usually quite good at these kind of things and this book overall didn't appear to me to be way over there, just an ordinary book with some twists and mystery.
Near the end of the book I already had this creeping suspicion. The pages left were getting thin and there were still a lot of questions unanswered. Even if this was the first book of a trilogy it wasn't like "these things will be explained in next books" kind of thing. I wasn't left with the confidence these questions would be answered in the follow up books or being eager to pick up the next book in the series.