It's every parent's nightmare. Your happy, funny, innocent son commits a terrible crime: murdering a complete stranger. You don't know who. You don't know why. You only know your teenage boy is in custody and his future lost. That night you fall asleep in despair. Until you wake - and it is yesterday. Every morning you wake up a day earlier, another day before the murder. Another chance to stop it. Somewhere in the past lie the answers - and you don't have a choice but to find them.