Burke and Hare murders doctors, the Burkes and Hares were charged with murder. As part of his investigation Christison interviewed Knox, who asserted that Burke and Hare had watched poor lodging houses in Edinburgh and purchased bodies before anyone claimed them for burial. Christison thought Knox was "deficient in principle and heart", but did not think he had broken the law. Although the police were sure murder had taken place, and that at least one of the four was guilty, they were uncertain whether they could secure a conviction. Police also suspected there had been other murders committed, but the lack of bodies hampered
West Mesa murders convicted Colorado serial killer Scott Lee Kimball stated that he was being investigated for the West Mesa murders, but he denied killing the women. In 2014, a breakthrough on a decades-old case caused Albuquerque police to became interested in Joseph Blea regarding the murders. Blea has been dubbed the "Mid-School Rapist" for his activities in the 1980s; police say he would often break into the homes of 13- to 15-year-old girls who lived near McKinley Middle School in Albuquerque and rape them. In one case, there was a DNA sample but the rape test kit wasn't re-run until 2010, eventually