Analyzing Time of Death On shows such as C.S.I the forensic investigator often asks. police or crime TV What is the TOD?" This refers to the time of death or the exact moment when a died. Temperature is an important indicator telling investigators when a person person died. organs that respond most quickly to changes in body temperature are the liver and the brain, and it's due to their mass and density. By analyzing these organs a coroner can tell the ToD. After death. a person's body temperature starts to lower to that of the surrounding environment rate of 12T devrees Celsius per hour. al a Celsius so if the police find a Normal body temperature is 30.5 degrees at MI a m murder victim with a body temperature of 25 A degrees he person is likely to have been killed 4 5 hours before.