Harpur and Iles may have uncovered corruption, but there are still plenty of unanswered questions . . . An investigation into an incident in another Force led Colin Harpur and his boss, Assistant Chief Constable Desmond Iles, to uncover corruption in the ranks and arrest a fellow policeman who murdered an undercover officer. But there are still many questions that remain unanswered: who ordered the execution? Why? Just how high did the conspiracy go and does the crooked power group behind the assassin still flourish? When the home office reopens the case, it is Harpur and Iles to whom the investigation is once more handed.