The Denver Prostitute Killer was an unidentified American serial killer responsible for the murder of at least 17 women and girls in Denver and its various suburbs between 1975 and 1995, however in 2005, based upon results from DNA Profiling, it was determined that the most likely killer was Billy Edwin Reid who was previously arrested and charged with the 1989 murder of Lannell Williams and Lisa Kelly. Reid was convicted and sentenced to life imprisonment for those specific murders, The killings were grouped together only in 2008 – until then, each of these crimes were considered to have been committed by different people. Murders The killer chose young girls and women, aged 15–25, as his victims, most of whom went missing in different areas in Denver and were later found dead. A common pattern was for them to be hitchhikers, to have visited bars or fast food restaurants, and a majority of them being engaged in prostitution. The victims were beaten and strangled, and their bodies dumped in the countryside along Interstate 70. Some of the bodies were posed in humiliating positions. According to investigators, the offender is responsible for the murder of 18-year-old Karolyn Walker, who disappeared on July 4, 1987, after meeting with her fiancé. After being kidnapped she was raped and strangled. During the course of the investigation, police found no incriminating evidence or witnesses, despite the fact that Walker likely resisted fiercely, as she was a good swimmer, did gymnastics and had considerable physical strength. Other victims include 17-year-old prostitute Kimberly Jean Grabin, who was found raped and strangled on August 18, 1979, near the I-70; 15-year-old Stephanie Ann Bauman, who went missing in October 1980 after hitchhiking to her home. Her naked body was found in a ravine on the outskirts of Denver on October 28. She had been beaten and tortured, after which she lapsed into unconsciousness. The attacker then threw her in the ravine, where Bauman soon died from hypothermia among the thickets of reeds and needles. 18-year-old Donna Wayne went missing on July 14, 1986, after visiting a bar with her friends. Her body was found a month later in the vicinity of Aurora. In all of the killings, the murderer had the same modus operandi, and it is supposed that he committed seven similar murders in Denver, five in Jefferson County and one in Larimer County. Investigation Since the bodies