In America, there is a law, where the accused "bad person" , if they were to write a book in the future, (or any movie made about the crime) certain parts of the crime might be omited (deleted out) AND, they can not get ANY $$$ money gains from selling the book. ALL of the proceeds ($ earned from book) will be given to the victim (s) families. The law is called "Son of Sam" law. Anyone interested can google to read how this law came about.
Besides unfair to the victims and their families, it is very dangerous to discharge him after some years of imprisonment! Who can guarantee him not to repeat murdering others???