Who shot Margaret Cunneen's career? Law & Order with Brenden Hills. SO how did we get to this point in the mystery that has become known in legal circles as "who shot Margaret Cunneen SC's career?" The corruption watchdog is pursuing the deputy senior crown prosecutor over allegations that she and her son, ­Stephen Wyllie, told his girlfriend, ­Sophia Tilley, to fake chest pains following a car ­accident in May to avoid being breath-tested by police. The rumour circulating among legal types is that a ­former associate of Ms ­Cunneen with an axe to grind, and who wasn't at the scene of the accident, tipped off the Independent Commission Against Corruption out of spite, implying she perverted the course of justice. "It's a bit of a mystery as to how the complaint has come to ICAC," one legal source said. There have been queries as to whether it was laid by ­someone who previously had a close association (with Ms Cunneen) but is no longer on good terms. Another said: "If it came from someone at the scene of the crash you could go through who was likely to have been there." "Ms Tilley - unlikely; ­Stephen - you wouldn't think so; police - they've already said it wasn't them; ambulance officers - perhaps," the source said. If the rumour is true it ­raises the question of whether ICAC has been used as a tool for ­revenge. Prosecutor Margaret Cunneen awaits the court decision on ICAC inquiry. On the other hand, an ICAC insider told Law And Order it wouldn't go ahead with such a high-profile ­inquiry on a whim. "Oh f... yeah - does a one-legged duck swim in a ­circle?" the insider exclaimed. They'd have something ­before ­announcing something that would go this public. Justice Clifton Hoeben will decide in the NSW Supreme Court tomorrow whether the hearing should go ahead. Ms Cunneen's barrister, ­Arthur Moses, SC, put a range of submissions to the court, ­including that ICAC was not legally authorised to hold a public inquiry on the matter and that the allegations had nothing to do with Ms ­Cunneen's job. THERE was a joke going around the NSW Police Homicide Squad's office on Friday. It was about their Kiwi counterparts" farcical case against former AC/DC drummer Phil Rudd. The NZ cops attempt to procure a murder charge against Rudd barely lasted 24 hours (or was it less?) before being pulled. One Aussie cop told us: "The first sign of trouble was that he was on a solicit to murder charge and still got bail. You can only imagine the prosecutors and lawyers have looked at the evidence and gone, "You're kidding."" THE state's new deputy chief magistrate, Chris O'Brien, made a touching, quiet tribute to his late son when he was sworn in to the position last Monday. Mr O'Brien wore his son's watch and tie to the ceremony. He also used a bible that was owned by his son. Mr O'Brien's son tragically passed away aged just 20. The new deputy chief magistrate was recognised as "an exceptionally gracious, broadminded and compassionate man." While his distinguished legal career was pored over, there was still time for his honour to be reminded of a couple of cases he dealt with last August. In one, Mr O'Brien fined a woman for hitting a police officer with a stiletto heel, in the other he banned a 76-year-old man from driving for the next 78 years. Originally published as Who shot Margaret Cunneen's career?