Should I read the novel??

Yes! At least I like the story A LOT! Wu Yus and Captain Bus relationship has such a great dynamic. And as you can imagine the novel is way darker ... Blood, Gore.
Maybe it will be a little dry going through the chapters that are already adapted here but of course with a complex case there needs to be a good built up. Their is a lot of case work going on. I find it interesting and even if that might be dragging for some people, it is still worth it for the characters.