`Why didn't Sam even try to stop Mathew Cooper attacking Gary Hawks in the gym that morning. And why didn't he own up to it his part in the attack, even when the pressure from his girlfriend, Sandra, becomes almost unbearable. And who can control Rick, Gary's brother, when Gary dies, alone, in hospital. Killing Gary Hawks turns everybody's world upside down and shows the people involved how they can change when just one single incident falls like a comet into their lives.'