This is very different from Barker's other books - much grittier and more disturbing. Much of it is based around a fish farm, a setting I found bizarre, spooky, fascinating and plausible. The characters all ring true, and you care passionately about them from very early on and feel you know what it's like to be in their shoes. I loved every minute of this book and wish she would write more like this - in writing a thriller she didn't seem to be trying to do anything very unusual, but she did it perfectly.