In today's criminal justice scenario, the traditional sources of proof, eyewitness' account, approvers, confessions have gone awry. The trials take just too long to keep the witnesses from turning hostile and the criminals are turning cleverer and more scientific. It is important that the prosecution agencies rely on something more authentic, more concrete and more productive in terms of convictions without the police having to resort to the third degree methods that not only violate fundamental human rights but also fail to produce positive results most of the time. There has to be something that is available, objective and, hence, not prone to the whims of the witnesses. The answer is provided by science, as by nature scientific evidence is, more or less, exact, far more reliable and does not turn hostile under threats. Besides, it works on clue materials, which are always available. However, in India, we do not seem to have realized how vast is the potential of Forensic Science, have been far less than successful in developing a temperament in our police to apply scientifically viable evidence, and have also done equally bad in getting our lawyers and judges to fully appreciate them. Consequently, we so often see a piece of scientific evidence, painstakingly begotten after long arduous hours in the laboratory, go waste in the courtroom. This work, based upon the careful study supplemented with valuable personal experience of the author, seeks to bring to the readers the necessary understanding of forensic science in layman's language so that the reader with an elementary understanding of science too could be benefited as much as a specialist would be. The work would be of immense interest and help to the police officers, the lawyers, the judges and the forensic scientists besides a common man who wants to understand forensic science and its application without having to study science. The book covers the entire gamut of Forensics including the latest developments, such as DNA, Fingerprinting, Voice Analysis, Computer Crime, Brain Printing etc.