The gripping standalone thriller from Sunday Times No. 1 bestselling author Karin Slaughter, now a major Netflix series starring Toni Collette and Bella Heathcote. She's the person you think you know best... But what if you don't actually know her at all? Andy Oliver thinks she knows everything about her mother Laura. Until, in a moment of terrible danger, Laura steps forward into the line of fire. Now, Andy must embark on a desperate race against time to uncover the secrets of her mother's past. Before they both run out of time...