For nearly four years they lay piled in a Scotland Yard evidence room, six overstuffed plastic bags gathering dust and little else. Inside was a treasure-trove of evidence: 11,000 pages of handwritten notes listing nearly 4,000 celebrities, politicians, sports stars, police officials and crime victims whose phones may have been hacked by The News of the World, a now defunct British tabloid newspaper. Yet from August 2006, when the items were seized, until the autumn of 2010, no one at the Metropolitan Police Service, commonly referred to as Scotland Yard, bothered to sort through all the material and catalog every page. During that same time, senior Scotland Yard officials assured Parliament, judges, lawyers, potential hacking victims, the news media and the public that there was no evidence of widespread hacking by the tabloid. After the past week, that assertion has been reduced to tatters, torn apart by a spectacular avalanche of contradictory evidence. The testimony and evidence that emerged last week, as well as interviews with current and former officials, indicate that the police agency and News International, the British subsidiary of Rupert Murdoch's News Corporation and the publisher of The News of the World, became so intertwined that they wound up sharing the goal of containing the investigation. Members of Parliament said in interviews that they were troubled by a revolving door" between the police and News International.