A 23-year-old medical student stands trial for the murder of an IRA gunman in a case which has become a cause celebre in the USA. Justine Levy insists on conducting her own defence, alienates the jurors by asking awkward questions and refuses to co-operate with Rick Parker, an inexperienced young lawyer the judge has appointed to act as standby counsel. But have they all under-estimated Justine, and why did she kill Sean Murphy? There are shocks and surprises in store before the bizarre truth is finally revealed.