'I can help you save your sister. But I need something from you ...'
Sisters Bree and Alissa Walker share a special bond. Neglected by their parents, they have always looked out for one another. But one day, sixteen-year-old Alissa goes missing. When Bree discovers her green backpack with all her belongings, abandoned on the steps of their run-down trailer, she knows that something bad has happened ...
Then she receives a chilling text message. Someone has Alissa. But Bree will have to give up something very precious in exchange.
Desperate to save Alissa, Bree looks at everyone close to their family. She's sure that Alissa's best friend is keeping something back about her little sister and a boy at school, and why has their estranged uncle, who they've not seen in years, been hanging around again?
It soon becomes clear that the person behind the message knows a lot about the dark truths within the Walker family and will go to any lengths to get revenge. And as the search for Alissa continues, Bree discovers something about her brother Tyler that she wishes she hadn't, a dangerous secret, which is also the key to bringing her little sister back home ...