I don't know where you are...I don't know what I've done....

Teenager Abigail Ryder is devastated when she gets home from school to find her family gone. Nothing makes sense. Things are missing from the house and her stepsisters' room is completely empty. But the police think she's trouble, and when grandmother Eleanor tells her to forget them all and move on, there's no choice other than face the future - alone.

Fourteen years on, Abi and Adam are a happy couple on the verge of parenthood. But when the past comes back to haunt Abi, the only way forward is to go back and uncover the truth - and reveal the dreadful secrets a mother has been hiding all these years.