A visual aid on how criminalistics and forensic expertise work, using examples from the cases of famous serial and mass murderers. How to catch a maniac or serial killer? Any investigation into such a case is a complex combination of different criminalistic sciences, such as toxicology, dactyloscopy, forensic ballistics, forensic expertise, profiling, or DNA analysis. In order to track down the killer, detectives have learned to interpret vital evidence, written in the language of fingerprints, tiny skin scales, dental impressions, bone fragments, blood and paint stains, traces of chemicals, or the trajectory of a bullet. In this book, researcher and author of articles and books on criminalistics and forensic science Brian Innes has gathered the most interesting cases that demonstrate the variety and complexity of methods used to capture especially dangerous criminals, while also discussing the history of the emergence and development of various branches of criminalistics. Ted Bundy, John Wayne Gacy, Richard Ramirez the Night Stalker, Lee Harvey Oswald, Albert DeSalvo the Boston Strangler, Ted Kaczynski the Unabomber, and many other serial killers are examined in this book from the perspective of the tactics used to capture them. The text is illustrated with more than 200 unique photographs from investigation files, many of which are shown for the first time.