Dark spaces - Helen Black

Having recently split up from the father of her baby, Lilly is not in a happy place, matters being complicated further by the arrival of her ex-husband who needs a sofa to crash on, having being thrown out by his new girlfriend. In the midst of all this, Lilly is asked by a child psychologist if she will help one of her patients: a girl currently sectioned having stolen a car while dangerously drunk. When Lilly visits her she is introduced to Chloe, another unstable teenager who slips Lilly a note saying 'Help us'. And then Lilly's client is killed and Chloe accused of her murder.