State of TN v. Ponnusamy
Supreme Court of India2026 INSC 507Bench: Justice M.M. Sundresh and Justice Satish Chandra Sharma
The Supreme Court delivered a doctrinally rich judgment in the long-running Dr. Subbiah murder case, setting aside the Madras High Court's order of acquittal and restoring the Trial Court's conviction. On the constitutional question, the Bench held that a directed crime-scene re-enactment or 'walkthrough', in which the accused is asked to walk through the scene of crime or imitate a visual sequence so that his physical attributes (gait, posture, height, manner of movement) can be captured for forensic comparison, does not amount to testimonial compulsion within the mischief of Article 20(3) of the Constitution. The reasoning is that such an exercise demands only physical demonstration — analogous to the giving of fingerprints, handwriting samples or voice samples, all of which have been held permissible by the Constitution Bench in State of Bombay v. Kathi Kalu Oghad (1961) — and does not require the accused to unearth or communicate any hidden personal knowledge of the crime. An expert forensic report such as a gait-analysis report, generated from a directed walkthrough, is admissible as a corroborative piece of evidence; however, it cannot, by itself, form the sole foundation of a conviction. On the appellate-jurisdiction question, the Court emphasised that a High Court sitting in appeal against a conviction must not reflexively undertake a wholesale re-appreciation of evidence and must not disturb concurrent findings of the Trial Court unless those findings are demonstrably perverse, illegal or impossible on the evidence; routine 'loose acquittals' based on speculative hypotheses are impermissible. Opening with a quote from Rabindranath Tagore on the boundless greed of gain, the Bench cautioned that the criminal justice system loses public confidence when appellate courts treat acquittal as a default rather than an outcome that follows from a careful judicial appraisal.