$1:
Psychologists and Psychiatrists told how Nick seems to have no remorse for his crime and shows signs of a budding psychopath which is a character flaw -- not an illness -- and therefore cannot be treated.
Keep him locked in an adult prison where someone can cuddle him. If he's released someone putting him down shoudln't count as murder, because they(psychopaths) aren't human beings, they are monsters posing as people. Shouldn't be any worse than putting down a mad dog or some other mammal that has killed a human.