The next morning, there was another murder. This time, the victim was a young woman who lived alone. Her body was found with signs of strangulation and her nails were missing. The police had not found the missing nails, so the murderer would not have been caught. If the victim had been raped, the police would have caught the murderer. But if the victim were alone, the murderer could have snuck into their homes and raped them. He was an "introverted personality" who could never get a woman to love him back. He would have been a "cunning and cautious guy" who would have followed the women for a long time. But there was only a two- to three-day gap between the first two murders and the third one. He had to kill one of the women to find a new victim. This morning, a broken syringe was found near the third victim's residence.