Within the framework of the cases described in this book, its author, Mark Williams-Thomas, will explain in detail how, while searching for suspects, he finds connections between clues. Tells about the tools at your disposal that allow you to comb the most secret corners. When Mark joined the police, he was only 19 years old, and he thought that he would devote his whole life to this, but at 31 he decided to change his field of activity. Serendipitously, he landed on television as a consultant writer for a TV crime show. Mark did his job so well that he soon began to advise the writers of almost all crime shows that appeared on two major British channels. After some time, he again changed his profession and became an investigative journalist, whom he works to this day. So relatives of killed or missing people who did not receive help from the police began to turn to him.