From 1975 to 1981, the Yorkshire area of England was terrorized by a string of murders. Though hundreds of investigators worked to find the killer, they were hampered by false leads, and the case generated so much paperwork that real clues were buried. After Sutcliffe was arrested for having stolen license plates, police noticed his similarity to the killer. What item found in a victim’s purse allowed investigators to narrow down the search to a group of 8,000 people—one that included Sutcliffe? Discuss