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Douglas et al.: Criminal Profiling from Crime Scene Analysis strangulation. There were post-mortem bite marks on the victim’s thighs, as well as contusions, hemorrhages, and lacerations to the body. The killer also defecated on the roof landing and covered it with the victim's clothing. The following discussion of this case in the context of the six stages of the criminal-profile-generating process illustrates how this process works. Profiling Inputs In terms of crime scene evidence, everything the offender used at the crime scene belonged to the victim. Even the comb and the felt-tip pen used to write on her body came from her purse. The offender apparently did not plan this crime; he had no gun, ropes, or tape for the victim’s mouth. He probably did not even plan to encounter her that morning at that location. The crime scene indicated a spontaneous event, in other words, the killer did not stalk or wait for the victim. The crime scene differs from the death scene. The initial abduction was on the stairwell; then the victim was taken to a more remote area. Investigation of the victim revealed that the 26-year-old, 90-pound, 4’1 1” white female awoke around 6:30 a.m. She dressed, had a breakfast of coffee and juice, and left her apartment for work at a nearby day care center, where she was employed as a group teacher for handicapped children. She resided with her mother and father. When she would leave for work in the morning, she would take the elevator or walk down the stairs, depending on her mood. The victim was a quiet young woman who had a slight curvature of the spine (kyhoscoliosis). The forensic information in the medical examiner's report was important in determining the extent of the wounds, as well as how the victim was assaulted and whether evidence of sexual assault was present or absent. No semen was noted in the vagina, but semen was found on the body. It appeared that the murderer stood directly over the victim and masturbated. There were visible bite marks on the victim’s thighs and knee area. He cut off her nipples with a knife after she was dead and wrote on the body. Cause of death was strangulation, first manual, then ligature, with the strap of her purse. The fact that the murderer used a weapon of opportunity indicates that he did not prepare to commit this crime. He probably used his fist to render her unconscious, which may be the reason no one heard any screams. There were no deep stab wounds and the knife used to mutilate the victim's breast apparently was not big, probably a penknife that the offender normally carried. The killer used the victim’s belts to tie her right arm and right leg, but he apparently untied them in order to position the body before he left. The preliminary police report revealed that another resident of the apartment building, a white male, aged 15, discovered the victim’s wallet in a stairwell between the third and fourth floors at approximately 8:20 a.m. He retained the wallet until he returned home from school for lunch that afternoon. At that time, he gave the wallet to his father, a white male, aged 40. The father went to the victim’s apartment at 2:50 p.m. and gave the wallet to the victim’s mother. When the mother called the day care center to inform her daughter about the BEHAVIORAL SCIENCES & THE LAW Bede 22