Got your back, IHAVENOCLUE....
http://prtl.uhcl.edu/portal/page/pct/USN/TheSignal/Life?articleId=402
Steven Egger, associate professor of criminology at the University of Houston-Clear Lake, is a nationally recognized expert in serial murder. "Steve Egger is a seminal criminal justice researcher in the very specialized area of serial murders," said Everette Penn, assistant professor of criminology. "Dr. Egger addresses our most inner fears by researching the subject, defining terms, and assisting state, local and federal authorities investigate these most heinous crimes."
Not only is it difficult to figure out why serial killers continue to kill,
it is also hard for law enforcement agencies to identify a serial killer due to "linkage blindness," another term coined by Egger. "Police don't share information across jurisdictional boundaries," Egger said. "There's always some friction there." Agencies prefer to worry only about their own jurisdiction, instead of sharing information to work together to solve a murder. Egger says a serial murder investigation may, but not always, have as many as seven different crime scenes: the place the victim was initially lured, transportation to a different location, the place the victim was kept, transportation to another location, where the victim was killed, where the body was dumped, and where the weapon was dumped. "In most instances all the police have is the dumpsite," Egger said. Egger says the other crime scenes are never investigated because of linkage blindness and the fact that law enforcement officials usually treat serial murder as a single homicide. "But if you find out that you're talking about multiple dumpsites in different jurisdictions, then you have a higher possibility of coming up with some trace evidence, particularly in the first kill," Egger said. "The offender brings something to the crime scene, leaves something at the crime scene, and takes something away from the crime scene,"
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