Great story, and the pace is perfect. I did find that I'd sussed the main "bad guy" within their first few appearances. My main gripe was the main character, Lucy, as she was one of the most unlikeable characters I've ever come across... Who leaves their young child alone so often?! I wish more police would just tell Lucy to shut up, stop arguing with the police and to stay in her lane. She was awful.
This would be a decent palette cleanser.