Part III of the Oregonian/OregonLive's series on John Ackroyd
                                
                                
                                    (Newser) -
                                    John Ackroyd was no stranger to Oregon police, or even to the district attorney in Jefferson County: The state highway mechanic had been accused of  a 1977 rape   and a suspect in a 1978 murder , both of which took place near Highway 20. Then, in 1990, his name surfaced again....