In the first edition of this book there was enthusiasm about investigative journalism: as a distinct genre of journalism; as a vital means of accountability, almost the fourth estate itself; as the first rough draft of legislation. Then, it was widely thought that investigative journalism was a valuable public service endangered by new technology and crass management. Now, when every medium trumpets its work as investigative journalism, it is often written off as just another squalid trick up the sleeves of money-grubbing media moguls. Fashions change.