Despite his best efforts, Paul Bernardin, 38, has been unable to get the Scottsdale Police Department to care about his theory regarding the unsolved 1978 murder of actor Bob Crane in Scottsdale. '[Bernardin] keeps coming in here saying he knows who killed Col. Hogan,' police chief Walter Dunfey said Monday. 'Then he usually goes off on how the electrical cord Crane was strangled with doesn't match the ones in the other rooms of the hotel he was in. What am I supposed to do with that information?' Bernardin, Dunfey said, is also convinced that the police possess Crane's infamous stash of self-produced amateur pornography. 