This is a dark book indeed - and aptly named. I read thrillers fairly regularly and wouldn't say I'm particularly squeamish or easily scared, but this book has an acute sense of realism that I found quite disturbing. The cast of characters are truly unlikeable and I had little empathy for even the main protaganist, Libby, and although not someone who has to like the people I'm reading about, in this case it just added to the sense of gloom. I thought the cattle slaughter scene was one step too far and really didn't feel the need to read that bit and consequently skipped the whole chapter. However, it is a horribly compelling book and although I was desperate to know the outcome, paradoxically I shied away from picking it up.
It's not what I would call an 'enjoyable' read, but it does have an original plot and it did make my heart pound in dread, which are what thrillers are supposed to do. Read this if you're not easily unnerved, but if you have a slightly sensitive nature I'd leave it well alone.