Forensic Science, indeed has several ethical concerns, but still can bring revolutionary changes in the field of rendering justice through the Criminal Justice System. This field comes up with huge potential in order to make changes in the society by setting exemplary notions by using the scientific tools and technologies. For assisting and rendering justice in a criminal investigation, forensic science acts as a boon to the criminal justice system in order to admission of the authentic evidences. With the growth of science and development forensic science has widened the scope of newly emerged scientific divisions which includes Mobile Forensics, Forensic Anthropology, Forensic Odontology, Forensic DNA Analysis, Computer Forensics, etc. Modern revolution in India has metamorphosed it from a dictating colony to an elected representative republic and with that transformation the Indian society has undergone far-reaching changes at a rapid speed. At present time, where the rate of science is expanding, the implementation of scientific techniques under the purview of forensic science is changing dramatically. Therefore, forensic science is a wider field which includes different branches like forensic serology, forensic chemistry, forensic biology, forensic physics, forensic ballistics, forensic toxicology, forensic psychology, forensic photography, voice analysis and uses of tools like microscopy, holography, uses of ultraviolet rays, chromatography, spectrography, electrophoresis, spectrophotometry, laser microprobe, etc. This paper deals with the different fields of forensic science and its application in the field of law following the laboratories being used all over the India. Further, the authors added a clear insight on the principles and ethics of forensic science and judicial paradigm in criminal justice system to support the whole assessment.