This thriller was pretty good. Gabrielle and her sister Meagan find out someone they are close to is a serial killer. So they try to gather evidence to nail him. Since this book was in the UK, nobody had guns to protect themselves with. There are also British slang and stores that I have no idea what they are, but the story moves at a fast pace so I didn't bother Googling it.
Also, Gaby seems to believe in Astrology which does get a tad annoying, but the blurbs after the book ends is about two other books of hers, and astrology plays a major part in them.
Overall, a good read. The police are slow to do anything, and one is corrupt so the stall is more tension. I would recommend this.