Between life and death, it is the latter that hogs more news. The qualities of even a person unknown are epitomized in a hyperbole more after a person departs than while living. The cause of death itself is of no value except when the process adopted for snuffing out life is so crafty that the perpetrator of the heinous crime leaves no trail. The name of Aarushi, a 15 year old girl, evokes a great deal of sympathy since the prime suspect for her murder is her own father, a dentist and at the same time bewilderment about how there has emerged no tangible clue to nail down by a plausible story of who could be the real culprit. After the CBI has taken over, it has assumed importance for another reason. Like never before, are questions asked whether narco-analysis and brain mapping employed against prime suspects and witnesses legitimate tools of getting at truth in the investigative process. Should a scientific process be immune from critical attack only because it is scientific? Of wha...