A former Newsweek senior writer tells the story behind the scandal of Jayson Blair, a mediocre former Times reporter who had made up stories, faked datelines, and plagiarized on a massive scale, rocked the Times to its core and revealed fault lines in a fractious newsroom that was already close to open revolt. Staffers were furious about the shoddy reporting that was infecting the most revered newspaper in the world, and the executive editor who had helped lead the paper to a record six Pulitzer Prizes had been forced out of his job. The profound implications of the scandal will shape how we understand and judge the media for years to come.