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...