Rookie Cop Dave Stewart knew that William Bailey was guilty of murder.  All he had to do to convict him was change one line in his statement. Detective Chief Superintendent John McCauley loves dirt. He collects it in secret files to use against his enemies and since Stewart slept with the beautiful Detective Sergeant Anne Wallace. He is the enemy. Stewart hatches a plan to destroy the evidence against him, but inside McCauley's files, is evidence of a vile paedophile ring operating under the Chief's nose. Now three people are dead and Dave Stewart is the prime suspect.