Gary Murray, himself a top private investigator with an extensive network of contacts in the shadow-world of undercover intelligence, has written a detailed expose of this unholy alliance. Much of his material derives from his own experience while the rest is rooted in research that he has undertaken with all the professional expertise of an insider with decades of experience of covert private intelligence work. Here are insights and revelations about the Hilda Murrell case, the infiltration by undercover agents of British trade unions and other organizations, the breathtakingly extensive use of illegal bugging and telephone-tapping devices, and the theft of official data.