Shock to the System

An anonymous tip leads to the discovery of the body of a 60-year-old man in a field. The man had a syringe in his hand and a straight razor was found under his body. The man took daily injections of insulin to treat his diabetes, but his body was found in a high crime neighborhood. Dr. G must find out whether the man's death was a homicide, suicide, accident, or natural death.A charred body is removed from the fiery wreckage of an 18-wheeler on the side of an Interstate highway. Dr. G must try to identify the driver, and find out what caused him to crash.