I don't believe that the murderers are scared about anything, including being captured. I think they crave the thrill aspect of their killing and are predators. But I would say that no two are exactly alike. I am remembering Jeffrey Dahmer and his killings. Also David Berkowitz, who claims to have found Jesus now that he has served more than 30 years of his sentence. Then there is the female serial killer. I cannot remember her name. There was a movie about her life and Charlize Theron played the murderer. Getting back to this site, someone out there must know something about these events. It is hard to imagine that no one knows anything. They say that there is not such thing as a perfect crime. It is too bad that all of the scientific forensic tools were not available back in the 1970's. Still, there could have been a small missed detail or two that might have given a clue or hint. If someone was brought to justice these many years later, the famiily members of the dead ones would, at least, have some type of closure.