Objective: Crime reconstruction is the forensic science discipline in which one gains "explicit knowledge of the series of events that surround the commission of a crime using physical evidence and their interrelationships". It is a crime mystery solved by crime reconstruction. Methodology: The author had investigated this crime scene, reconstructed and solved the mystery. A decomposed dead body of a boy aged about 18 years old, found under a tamarind tree in the western side of the trunk with a plant rope around the neck. On the eastern side of trunk dried bloodstain found on the floor. The relatives and villagers have alleged the crime scene as murder. Result: The author reconstructed the crime scene as follows. This boy had committed suicide using a plant cord as ligature among a branch in the eastern side. Since the body was hanging for more than a day, blood discharged from the hanging body, and trickled down as found in the eastern side floor. Then the hanging creeper plant spontaneously at the middle of the plant rope and fallen down. On the way to fall, the dead body fell on a V shaped branch under hanging point and that changed the direction of fall to opposite side. i.e. fallen in western side tree floor, as found in the crime scene now. The blood pool found in the eastern side of the floor under the tree while dead body in the western side of the tree trunk. Conclusion: The manner and cause of death of an alleged homicide explained based on crime reconstruction and ruled out homicide. At length the family members of the deceased too accepted the crime reconstruction. Finally, the police closed the case as “Death by suicidal hanging" based on crime reconstruction report and autopsy report.