Any crime leaves traces. The task of a criminologist is to find and solve them, and for this purpose, professionals have tools and techniques in their arsenal that help bring even the most cunning, cruel and resourceful criminals to light. You will find a step-by-step study of 50 “ideal” crimes, widely covered in the world press and solved solely thanks to the experience, skill and talent of forensic scientists. You will learn fascinating details about fingerprints, tool impressions and a variety of traces, about DNA, blood spatter, ballistics, poisons and drugs, as well as handwriting and voice analysis. Each chapter examines different types of evidence and methods used to discover evidence analysis. The authors of the book tell us what a typical working day is like for employees of the forensic department. “It is almost impossible to disappear from a crime scene without leaving any physical traces. Criminals may be smart enough to wear gloves or masks to hide their identity - although this does not always happen. However, they may not know that investigators need very little evidence to link them to the crime. A bitten apple, traces of tools found at a crime scene, footprints in the mud or snow - these are just some of the threads leading to the criminals." The book "Him or Helped" is not just an introduction to criminology: it reads like an exciting detective story, but numerous documentary illustrations contribute to a more vivid and complete perception of information. “This book is a truly fascinating overview of the world of forensic science, a description of the work of forensic professionals who use their invaluable experience and the latest scientific methods for a good purpose: to exonerate the innocent and convict the true criminals.”