outside, they saw more than just pretty scenery. >> witnesses who were on the dinner train saw what appeared to them to be a human body laying in the bottom of this creek. >> local authorities secured the site and found the remains of a middle-aged woman wearing nightgown and slippers. a blue jacket was thrown nearby along with an empty pack of cigarettes. unfortunately, there were no fingerprints, dna or any other forensic evidence on the cigarette pack. >> the medical pathologist who performed this autopsy was not able to determine a cause of death. >> the medical examiner's ultimate autopsy didn't show any obvious signs of homicidal violence. yet it was clear from the circumstances that she was the victim of a homicide. >> after a review of missing persons reports, police identified the victim as 53-year-old arlene jensen who lived alone and worked as a seamstress. her son reported her missing five weeks earlier when she