A case of brutal murder where the deceased was found dead in his house with fatal wounds from a sharp weapon. The deceased’s wife and daughter suspected the wife of the deceased’s brother and her sons to be involved along with her brother as there were disputes between the family relating to property matters. Police referred polygraph test on all four suspects. While the wife of the deceased’s brother, one of her son and her brother agreed for the test, her other son avoided the test. Police took a lead into the investigation with this denial and reluctance and it was revealed in continuing investigative efforts of the Police that he was involved in the murder along with his friend and thereby the culprits were arrested.