Abi had a secret life. That's why she had to die. Grace is living through every mother's worst nightmare. Her student daughter Abi went away on a dream vacation - and was murdered. Overwhelmed by grief, and fighting off old demons which have resurfaced, Grace tries to make sense of it - who would want to kill her beautiful girl? But as she learns more about Abi's life in the UK, she realises she didn't know her own daughter very well. How did Abi acquire all those designer clothes? And what was she doing on those mysterious trips to London? Grace desperately needs to find answers. But soon it becomes clear that someone doesn't want her digging into Abi's secret past. Someone who knows how to use Grace's own weaknesses against her, sending her on a journey to the darkest hell...