In 2009, 17-year-old Stacey Hyde was arrested for killing her best friend's boyfriend. She stabbed him to death after a drunken fight in his flat. Stacey insisted she was defending herself and her friend. But as her criminal charge reached court, the jury saw differently and found her guilty of murder. Those close to Stacey stood by her and searched for a way to prove that she acted in self-defence. Could the charity Justice for Women offer a way out? Stacey Hyde's case is one of many in which women who kill are imprisoned for murder, even though the courts may not have fully examined the circumstances that led to the event