Annabelle Lake thought she recognised the Ford Fiesta waiting outside her school, and the driver in it. She was wrong.
Her body is discovered some time later, dangling from a swing in a local playground on Canvey Island.
The post-mortem shows she's been fed, clothed and kept warm. That whoever was responsible had looked after her. But when another girl goes missing and is found in a similar fashion, that's where the similarities end.
Both girls have never met, they don't know each other, and they're from completely different backgrounds.
So what connects them? DS Tomek Bowen and the team at Essex Police must find out before it's too late. And on an island that's below sea level, it's only a matter of time until the truth comes flooding out.