Albert DeSalvo F. Conley said he expected investigators to find an exact match when the evidence is compared with his DNA. On July 19, 2013, Suffolk County DA Daniel F. Conley, Mass. Attorney General Martha Coakley and Boston Police Commissioner Edward F. Davis announced that DNA test results proved DeSalvo was the source of seminal fluid recovered at the scene of Sullivan's 1964 murder. Though DeSalvo was conclusively linked to Mary Sullivan's murder, doubts remain as to whether he committed all of the Boston Strangler homicides — and whether another killer could still be at large. When he confessed, people who knew
Serial killer basis. "The serial killer is no different from any other individual who is instigated to seek approval from parents, sexual partners, or others." This need for approval is what influences children to attempt to develop social relationships with their family and peers, but if they are rejected or neglected, they are unable to do so. "The quality of their attachments to parents and other members of the family is critical to how these children relate to and value other members of society." Wilson and Seaman (1990) conducted a study on incarcerated serial killers, and what they felt was the most