This document contains the original judgment from the Supreme Court of India in the case of Selvi & Ors vs State of Karnataka. It addresses critical legal questions surrounding the involuntary administration of scientific techniques like narcoanalysis, polygraph examinations, and BEAP tests in criminal investigations. The judgment explores the tension between efficient investigation and individual liberties, particularly focusing on the right against self-incrimination and personal liberty under the Constitution. This is essential reading for legal professionals, students, and anyone interested in the legal implications of forensic science in criminal justice.