Britain's top police official resigned on [July 17], the latest casualty of the phone-hacking scandal engulfing British public life, just hours after Rebekah Brooks, the former chief executive of Rupert Murdoch's News International, was arrested on suspicion of illegally intercepting phone calls and bribing the police. The official, Sir Paul Stephenson, commissioner of the Metropolitan Police Service, commonly known as the Met or Scotland Yard, said that he had decided to step down [but] that he had done nothing wrong and that he would not lose sleep over my personal integrity." The commissioner's resignation came as the London political establishment was still digesting the stunning news about the arrest of Ms. Brooks - who apparently was surprised herself. A consummate networker who has always been assiduously courted by politicians and whose friends include Prime Minister David Cameron, Ms. Brooks, 43, is the 10th and by far the most powerful person to be arrested so far in the phone-hacking scandal. The arrest was a shock to the News Corporation, the parent company of News International, and the other properties in Mr. Murdoch's media empire, which is reeling from the traumas of last week: the forced withdrawal of its cherished $12 billion takeover bid for British Sky Broadcasting and the resignations not only of Ms. Brooks but also of Les Hinton, a longtime Murdoch ally and friend who was the chairman of Dow Jones and the publisher of The Wall Street Journal.