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ee | 6} @ | . July 6, 1988 UNSUB; AKA JACK THE RIPPER; - SERIES OF HOMICIDES LONDON, ENGLAND 1888 NCAVC ~- HOMICIDE (CRIMINAL INVESTIGATIVE ANALYSIS) The following criminal investigative analysis was prepared by Supervisory Special Agent (SSA) John E. Douglas, FBI National Center for the Analysis of Violent crime (NCAVC), Program Manager of Criminal Investigative Analysis. At the request of Cosgrove-Meurer Productions, SSA Douglas was requested to prepare an analysis of a 100-year-old, unsolved serial murder case that occurred in England. This historical case was known as. "Jack the Ripper." SSA Douglas was provided basic background information relative to each Case; however, it is noted that forensic technology and other investigative techniques, as we know of teday, were nonexistent a century ago. Medical examiners! reports were incomplete, crime scene photography was used sparingly, and police investigative reports do not reflect the type of thoroughness evidenced today. ; When a case is submitted for investigative analysis, the reliability and validity of the overall analysis is hinged on the thoroughness displayed by the medical examiners, technicians, investigators, etc, Although materials provided were not as complete as cases submitted today by much more sophisticated law enforcement agencies, SSA Douglas filled in the missing pieces of information by making certain probable assumptions. This analysis will address the following areas: Victimology or profile of victims; medical examiner's findings; crime and crime scene analysis; offender traits and characteristics; pre- and post-offense behavioral patterns; investigative and/or proactive techniques; and interview/ interrogation suggestions. Rather than address each homicide Separately, SSA Douglas' comments will relate to the entire series of homicides as a whole.