Roommates lending books they love can be a dicey proposition. It wasn’t that I was worried I would dislike Skallagrigg; I just worried I wouldn’t like it enough. This feeling stayed with me for the first part of the book, because it didn’t seem very straightforward at first. There was cryptic foreshadowing that would make sense towards the end. Thankfully, after the first few chapters, the book changes tack and becomes much easier to…