When hears the words every mother dreads, her perfect world shatters. She takes in the beautiful long blonde hair, torn yellow dress and chipped blue nail-varnish. Even when they show her the familiar looping handwriting and smudged ink on the note her little girl left behind. She knows her bubbly, vivacious daughter would never take her own life. As she searches Grace's perfume-scented room, filled with smiling photos, she uncovers secrets her daughter had been hiding. Secrets that make her wonder how well she really knew the woman her only child was becoming. Kat's determined to find out what really happened to Grace on the night she died, even if it means facing her own troubled past. But as she gets closer to the terrible truth, Kat finds herself faced with an unthinkable question: there was no way she could have protected Grace - or was there?