It is being reported that the coroner in the murder case of MI6 agent Gareth Williams has said that "secret agents specialising in the dark arts" might have tried to cover up the death of the young security services employee.So, just which secret agents would this be? Are MI6 covering up their own tracks? Was Mr Williams about to turn whistleblower? Which other security services are involved?As always, more questions that answers are raised by this main stream news item Less