Judge Knox is an eminent, rigorous and unpopular High Court judge. But after committing a judicial error, the criminal he wrongly sentenced comes looking for revenge. Then, he seduces the judge's stepdaughter and turns her into a drug addict and sexual pervert. When he is found dead, Judge Knox is arrested, charged with murder and tried in his own court at the Old Bailey. For his defence, the judge spurns Queens Counsel friends and instead chooses a junior barrister - the man who loved his stepdaughter before she was corrupted. Against a cunning attorney general and a cantankerous lord chief justice can the junior counsel win over the jury?