In London a young man stands accused of murder.

All the evidence points to him; the police see an open and shut case.

But at his trial, this man, who has tried to stay out of trouble all his life, tells an extraordinary story.

It is about a young woman who tried to protect her brother and got into terrible trouble. It's about a young man who, in order to save her, entered a dark, violent world he'd avoided for so long.

He now stands in the dock and wants to tell you the truth. He needs you to believe him. Will you?