With advances in science and forensics, it is now more certain as to guilt. There have also been great strides taken to study and learn about these particular type of killers, understanding that they can't be rehabilitated, it's just the way they are. So with more scientific evidence and rehabilitation impossible, most serial killers will never see the light of day again.
There is also the factor of the death penalty, and some states have reinstated the death penalty for just this reason. People understand now more about this type of murder than ever before. Crimes so senseless and horrific that juries feel death is the only just sentence.
So there have been much fewer killers of this type ever getting out of prison. The percentage would be very small. Parole boards have learned the hard way that releasing a killer can come back to bite them. A perfect example is New York serial killer Arthur Shawcross. Shawcross was convicted of killing two children and he served about 14 years. He convinced the parole board that he was rehabilitated and was paroled.
Within a very short time Shawcross got busy killing local prostitutes. Finally caught because he returned to a body dump, there was outrage on a national level. People wanted to know how a child killer can be released back onto an unsuspecting community. An important point to make here is, Shawcross killed 2 people. That makes him 1 kill shy of being a serial killer. It's splitting hairs, but that may have
been considered at his parole hearing.
There is one final point to make. There are alot of killers that do very well in a structured environment like prison. In fact a lot of times they thrive. They become 'model' citizens and some never cause any trouble at all. They often-times are liked by their guards and there can be mutual respect. This also may sway a parole board. In the case of the Tate-La Bianca murders in California, Sharon Tate's mother or other family members always attend parole hearings to keep their loved ones killers behind bars. This too, is a powerful message to any parole board.
None! Murderers do it because they are psychos, not because they play games.
900
Insanitity
With knives.
its a doggy
He sends murderers to do it.
When the murderers kill Banquo, Fleance (Banquo's son) flees. And the murderers only kill Banquo not Fleance however Macbeth told the murderers to kill both the father and the son.
Enough to kill you.
Yes, it does happen.
Macbeth sets an ambush for Banquo with three murderers. The murderers kill Banquo but Banquo's son Fleance escapes.
The murderers fail to kill Fleance.
Macbeth instructed the murderers to kill Banquo and his son Fleance.