'I'm so very sorry. But your son is dead.'As I hear the words every mother dreads my pulse races and I go cold. But even as my world turns upside down I know the things I'm being told just don't add up. I have to find out what really happened the night my beautiful boy died...The police tell me it was a tragedy no one could have prevented. But then they reveal the terrible things Tom was keeping from me. The person they describe is nothing like the decent, honest man I raised. Newly qualified as a doctor, Tom had such a bright future ahead of him.A mother knows her own child. And I'm determined to prove my son's innocence.It's the last thing I will ever be able to do for him. So I have come to the city where he lived and moved into his empty flat under a different name.When I discover his diary, it becomes clear his death wasn't an accident.And as I get to know Tom's friends and neighbours I realise they're all keeping secrets.But as I get closer to the truth, I realise my life is in danger too...