When a young woman was found brutally murdered in an Aurora, Colorado alleyway in October 1996, one eagle-eyed detective zeroed in on forensic evidence he hoped would lead him to her killer. But one by one, that evidence ruled out every person they thought may have killed 25-year-old Tangie Sims and eventually her case went cold. And it stayed cold until new detectives revisited old evidence with new technology, took a look at one particular family tree and finally found who they’d been looking for.
